tom can type a report in 3 hours and nelson takes 5 hours. how long will it take the two of them typing together?

An analysis of future events performed by the probability of those events and the potential outcomes is called probabilistic analysis.

Probabilistic analysis involves using mathematical models and statistical techniques to estimate the likelihood of different outcomes, given a set of assumptions and inputs. It is commonly used in risk management, financial analysis, and project management to evaluate the potential impact of different scenarios and make informed decisions. By quantifying the probabilities of different outcomes, probabilistic analysis helps decision-makers identify the best course of action and manage uncertainty and risk.

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We can be 90% confident that the true mean additional tax owed in the population of audited estate tax returns falls between $3044.92 and $3875.08.

To construct a 90% confidence interval for the mean additional tax owed in a random sample of 100 audited estate tax returns, we need to use a t-distribution because the population standard deviation is not known. The formula for the confidence interval is:

CI = x' ± t*(s/√n)

Where x' is the sample mean, s is the sample standard deviation, n is the sample size, and t is the t-value from the t-distribution with (n-1) degrees of freedom and a 90% confidence level.

The t-value for a 90% confidence level with 99 degrees of freedom (n-1=100-1=99) is 1.660.

Substituting the values given in the problem, we get:

CI = 3460 ± 1.660*(2520/√100)

CI = 3460 ± 415.08

CI = (3044.92, 3875.08)

This means that if we were to repeat this sampling process many times, 90% of the time the true mean would be captured by the confidence interval.

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Complete question is:

In a random sample of 100 audited estate tax returns, it was determined that the mean amount of additional tax owed was $3460 with a standard deviation of $2520

Construct and interpret a 90% confidence interval for the mean additional.

Probability about at least one customer arrives at the shop while a one-minute interval is almost 0.632 or 63.2%.

The probability that at least one customer arrives at the shop during a one-minute interval can be calculated using the Poisson distribution, which is commonly used to model the arrival of events over a given time period.

Let's assume that the average number of customers arriving at the shop per minute is [tex]l[/tex]. Poisson probability mass function is;

[tex]P(X = k) = (e^{-l} * l^k) / k![/tex]

where X is the random variable representing the number of customers arriving in a one-minute interval, and k is the number of customers that arrive.

To find the probability of at least one customer arriving, we need to calculate the probability of X being greater than or equal to 1. That is,

[tex]P(X > = 1) = 1 - P(X = 0)[/tex]

When [tex]l[/tex] is relatively small, we can use approximation:

[tex]P(X = 0) = e^{-l[/tex]

Therefore,

[tex]P(X > = 1) = 1 - P(X = 0)[/tex]

[tex]≈ 1 - e^{-l[/tex]

We don't have the value of [tex]l[/tex], but assuming an average arrival rate of 1 customer per minute (i.e., [tex]l[/tex] = 1), we get:

[tex]P(X > = 1) = 1 - e^{-1[/tex]

≈ 0.632

Therefore, the probability about  at least one customer arrives at the shop while a one-minute interval is almost 0.632 or 63.2%.

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The sum of the expression is 3.5x+6.8.

Given that are two expressions, we need to find the sum of the expressions,

The expression is a mathematical statement which is constructed by putting arithmetical operations, variables and numbers together.

So, finding the sum.

(-4.25x + 9) and (8x - 2.2)

Putting the sign of addition,

= (-4.25x + 9) + (8x - 2.2)

Opening the brackets,

= -4.5x + 9 + 8x - 2.2

Combining the like terms.

= 8x-4.5x + 9-2.2

Operating the like terms,

= 3.5x+6.8

Hence, the sum of the expression is 3.5x+6.8.

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The current outdoor temperature is 37.89°C, which is less than the highest temperature limit, i.e., 47.8°.

Both Celsius and Fahrenheit have different zero points and the temperature increments also vary quite differently. 100 degrees separate freezing and boiling on the Celsius scale, but for Fahrenheit the difference is 180 degrees. This means Celsius is 1.8 times larger than Fahrenheit.

To determine whether the medication has been exposed to temperatures higher than 47.8°C, we need to convert the outdoor temperature from Fahrenheit to Celsius. The conversion formula is:

°C = (°F - 32) x 5/9

Using this formula, we can get the temperature in Celsius form,

°C = (100.2 - 32) x 5/9

   = 37.89°C

Since the outdoor temperature is lower than the maximum temperature the medication can be exposed to, it is safe to assume that the medication has not been exposed to temperatures higher than 47.8°C.

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Answer: tan(R) = m/p

Step-by-step explanation: In the right triangle shown in the diagram, we know that the tangent of angle R is equal to the length of the opposite side (m) divided by the length of the adjacent side (p).

Therefore, an expression in terms of m and p that represents tan(R) would be tan(R) = m/p

This parallelogram is a rhombus.

Using the characteristics of parallelograms, we can establish what kind of parallelogram this is. In addition to having opposite sides that are parallel and congruent, parallelograms also have opposite angles that are congruent.

The distance formula can be used to get the length of each side of the parallelogram first.

A = 5, B = 5, C = 5, D = 5, etc.

As all the sides are identical in length, we know that this object is a rhombus.

The slopes of the lines comprising the opposing sides of the parallelogram can also be determined in a different way:

AB's slope is (8-3)/(2-2) = undefined.

CD's slope is (3-8)/(7-7) = undefined.

BC has a slope of 0 (8-8)/(7-2)

AD slope is equal to 0 (3-3)/(7-2)

The slopes of opposing sides can be seen to be both undefinable or zero, suggesting that they are parallel. Moreover, this is a rhombus because the opposing sides are the same length.

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Answer:

6.02

Step-by-step explanation:

sin 37=x/10

x/10=sin 37

x=10(sin 37)

x=6.02

The flour will fit into two of the container is 144 inches.

What is the volume of cuboids?

A cuboid is a six-sided solid known as a hexahedron. Quadrilaterals make up its faces. Cuboid is short for "like a cube". A cuboid is similar to a cube in that a cuboid can become a cube by varying the lengths of the edges or the angles between the faces.

Here, we have

Given: Mrs. Hanson is filling containers in her bakery with flour.

we have to find how much flour will fit into two of the containers.

Volume of cuboid = length × breadth × height

Length = 6 inches

Breadth = 3 inches

Height = 8 inches

The flour will fit into two of the containers = length × breadth × height

= 6 ×3 × 8

= 144 inches

Hence, The flour will fit into two of the container 144 inches.

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Answer: The function that is an exponential function that is decreasing is described as:

an exponential function that is decreasing.

A quadratic function that is increasing then decreasing would have a U-shaped graph, and a quadratic function that is decreasing then increasing would have an inverted U-shaped graph. However, neither of these options describes an exponential function that is decreasing.

Therefore, the correct choice is: an exponential function that is decreasing.

Step-by-step explanation:

(b) The volume of the medium box is 5832 cubic inches.

In mathematics, a ratio is a comparison of two quantities or numbers. It is expressed as the quotient of one number divided by another, and is often written as "a:b" or "a/b". Ratios are used to compare the sizes of two or more quantities, and they can be used to solve problems involving proportions and percentages.

For example, if a recipe calls for a ratio of 2 cups of flour to 1 cup of sugar, this means that for every 2 cups of flour used, 1 cup of sugar should be used as well. Similarly, if a company has a debt-to-equity ratio of 2:1, this means that for every $2 of debt, the company has $1 of equity.

(a) Let x be the length of the sides of the original box. Then the volume of the box is x^3 = 216, so x = 6.

When the length, width, and height are all tripled, the new side length of the medium box is 3x = 18.

The ratio of the sides of the medium box to the original box is 18:6, or simplified, 3:1.

The area of the base of the original box is. [tex]x^2 = 6^2 = 36[/tex]square inches.

The area of the base of the medium box is. [tex](3x)^2 = 18^2 = 324[/tex] square inches.

The ratio of the 5832 of the bases of the medium box to the original box is 324:36, or simplified, 9:1.

The volume of the medium box is. [tex](3x)^3 = 18^3 = 5832[/tex]cubic inches.

The ratio of the volumes of the medium box to the original box is 5832:216, or simplified, 27:1.

(b) The volume of the medium box is 5832 cubic inches.

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The area of circle is with radius 3xy³ is 9πx²y⁶.

Area of a circle is the region occupied by the circle in a two-dimensional plane. It can be determined easily using a formula, A = πr2.

Radius of a circle is the distance from the center of the circle to any point on it's circumference. It is usually denoted by 'R' or 'r'.This quantity has importance in almost all circle-related formulas. The area and circumference of a circle are also measured in terms of radius. Circumference of circle = 2π (Radius)

area of circle=πr²

=π×(3xy³)²

=9πx²y⁶

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e y = e y is the expression for the aggregate demand curve the level of result is defined exclusively by the equilibrium state in the goods market and is autonomous of the monetary policy curve.

Monetary policy curve = r = 0 0.5π

IS curve e y = 19 − r

To calculate the aggregate demand curve, we need to converge the IS curve and the monetary policy curve. By substituting the monetary policy curve into the IS curve:

e y = 19 − r

e y  = 19 − 0.5π

π = 38 - 2e y

Substituting  this expression for π into the monetary policy curve:

r = 0.5π = 19 - e y

e y = 19 - r

e y  = 19 - (19 - e y)

e y = e y

The aggregate demand curve is simply equated as:

e y = e y

Therefore we can conclude the expression for the aggregate demand curve as e y = e y.

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To find the expression for the aggregate demand curve, we will first solve for the equilibrium interest rate (r) and output level (y) using the given monetary policy curve and IS curve.

Step 1: Express r from the monetary policy curve
r = 0.5π

Step 2: Substitute the value of r in the IS curve
y = 19 - r
y = 19 - 0.5π

Step 3: Rearrange the equation to express the aggregate demand curve
y = 19 - 0.5π

The aggregate demand curve is represented by the equation y = 19 - 0.5π.

EXPLAINATION

To find the expression for the aggregate demand curve, we can use the equation:

Aggregate Demand = C + I + G + NX

Where:
C = Consumption
I = Investment
G = Government Spending
NX = Net Exports

We can express the Consumption and Investment components as functions of output (Y) and the interest rate (r):

C = a + bY - c(r)
I = d - e(r)

Where:

a, b, c, d, and e are constants.

Now, we can substitute the expressions for Consumption and Investment into the Aggregate Demand equation:
Aggregate Demand = a + bY - c(r) + d - e(r) + G + NX

Next, we can use the IS-LM model to solve for output (Y) in terms of the interest rate (r). From the given IS curve, we have:

Y = 19 - r

Now, we can substitute this expression into the Aggregate Demand equation:
Aggregate Demand = a + b(19-r) - c(r) + d - e(r) + G + NX
Simplifying this expression, we get:
Aggregate Demand = (a + 19b + d + G + NX) - (b + c + e)r
Thus, the expression for the Aggregate Demand curve is:

AD = (a + 19b + d + G + NX) - (b + c + e)r

Where: a, b, c, d, e, G, and NX are constants.

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Answer:

$3.45

Step-by-step explanation:

We get a probability of 3/8 or 0.375.

To find the probability of two successes (i.e., drawing two red balls) out of three draws from an urn containing 14 balls (7 of which are red), we can use the binomial probability formula:

[tex]P(X = 2) = (n\ choose\ x) * p^x * (1-p)^{(n-x)[/tex]

where

n is the total number of draws (3 in this case),

x is the number of successes (2 in this case),

p is the probability of a success on any given draw (7/14 or 1/2 in this case),

and (n choose x) is the number of ways to choose x items out of n items.

Plugging in the values, we get:

[tex]P(X = 2) = (3\ choose\ 2) * (1/2)^2 * (1/2)^{(3-2)} = 3/8[/tex]

Therefore, the probability of getting two red balls out of three draws is 3/8 or 0.375.

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d) there must be at least 30 trials.

The value of the expression, -0.4·(3·x - 2) + (2·x + 4)/3 when x = 4 is 0

-0.4 × (3 × 4 - 2) + (2 × 4 + 4)/3 = 0

A mathematical expression comprises, variables, and or numbers, which could include indices, joined together by mathematical operators.

The value of the expression -0.4·(3·x - 2) + (2·x + 4)/3 for x = 4 can be found by plugging in x = 4 into the expression as follows;

Where; x = 4

-0.4·(3·x - 2) + (2·x + 4)/3 =  -0.4 × (3 × 4 - 2) + (2 × 4 + 4)/3

-0.4 × (3 × 4 - 2) + (2 × 4 + 4)/3 = -0.4 × (12 - 2) + (8 + 4)/3

-0.4 × (12 - 2) + (8 + 4)/3 = -0.4 × 10 + 12/3 = -4 + 4 = 0

Therefore;

The value of the expression, -0.4·(3·x - 2) + (2·x + 4)/3 for x = 4 is zero

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Part A:

The correct answers are:

The data set is numerical data

The data in this set can be quantified in the form of numbers.

The set has an outlier

An outlier is an extreme value that differs from the rest of the set. The outlier in this set is 5.

A box plot is an appropriate data display for this data

A box plot is great for showing distribution of data. A circle chart would not be good for this set because circle charts are better for part-to-whole data.

Part B:

A: Students in his class have between 5 to 950 photos stored on their cell phones.

The text at the top explains that this data was gathered from students in Shamar's class, and the data ranges from 5 to 950.

Therefore , the solution of the given problem of coordinates comes out to be  (1, -4) are the coordinates of the vertex of the function  F(x) = x² - 2x - 3.

When used in connection with particular other algebraic components on this place, such as Euclidean space, a parameter can reliably detect placement using a number of qualities or coordinates. Coordinates, which appear as collections of numbers when traversing in reflected space, can be utilised to identify particular places or things. Using the two y & x measurements, one can find something over both sides.

Here,

The formula x = -b/2a can be used to determine the vertex of a quadratic function with the form

F(x) = ax² + bx + c. A and B are equal in the given function

=>  F(x) = x² - 2x - 3.

With these values entered into the formula, we obtain:

=> x = -b/2a x = -(-2)/(2*1)

=> x = 2/2 x = 1

Consequently, the vertex's x-coordinate is 1.

Now, we can enter the value of x into the following function, F(x), to determine the vertex's y-coordinate:

=> F(1) = 1² - 2(1) - 3

=> F(1) = 1 - 2 - 3

=> F(1) = -4

Therefore, the vertex's y-coordinate is -4.

As a result, (1, -4) are the coordinates of the vertex of the function

=> F(x) = x² - 2x - 3.

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Answer:

11x + 2y

Step-by-step explanation:

Expand the equation:

3(x + 2y) + 4(2x - y)

Multiply 3, by x & by 2y:

3(x + 2y) ===> 3x + 6y

Then, multiply 4, by 2x & by -y:

4(2x - y) ===> 8x - 4y

Finally, you add/subtract the two results from the parenthesis:

3x + 6y + 8x - 4y ===> 11x + 2y

Your final expanded result will be: 11x + 2y.

The composition of functions, j, k, m, and n, when completed is shown below.

To complete the composition of functions j, k, m, and n, we can write the composite functions in the following form:

(j∘k)(x) = j(k(x))

(j∘m)(x) = j(m(x))

(j∘n)(x) = j(n(x))

(k∘m)(x) = k(m(x))

(k∘n)(x) = k(n(x))

(m∘n)(x) = m(n(x))

Each of the composite functions would be:

(j∘k)(x) = j(k(x)) = j(x + 2) = (x + 2)² = x² + 4x + 4

(j∘m)(x) = j(m(x)) = j(x - 6) = (x - 6)² = x² - 12x + 36

(j∘n)(x) = j(n(x)) = j(3x) = (3x)² = 9x²

(k∘m)(x) = k(m(x)) = k(x - 6) = (x - 6) + 2 = x - 4

(k∘n)(x) = k(n(x)) = k(3x) = (3x) + 2 = 3x + 2

(m∘n)(x) = m(n(x)) = m(3x) = (3x) - 6 = 3x - 6

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For the given circle the value of x = [tex]18^{0}[/tex] and the value of y = [tex]10^{0}[/tex] .

What about circle?

A circle is a two-dimensional geometric shape that consists of all the points in a plane that are equidistant from a fixed point called the center. The distance from the center to any point on the circle is called the radius of the circle. The diameter of a circle is the distance across the circle passing through the center, which is equal to twice the radius.

The circumference of a circle is the distance around the outside edge of the circle and is given by the formula C = 2πr, where "r" is the radius of the circle, and "π" (pi) is a mathematical constant equal to approximately 3.14159. The area of a circle is given by the formula A = πr^2, where "r" is the radius.

The circle is a fundamental shape in geometry and is used in many areas of mathematics, science, and engineering. It has many properties that make it useful, such as being able to inscribe it in a square with equal sides, as well as being the shape that minimizes the perimeter for a given area.

According to the given information:

As, we know that when diameter passes through center of circle is form a right angle .

So,  

[tex]5x^{0} = 90^{0} \\\\x^{0} = 18^{0}[/tex]

In the same way as we know that sum of all angle of triangle is = [tex]180^{0}[/tex]

i.e.

[tex]5x^{0} + 50^{0} + 4y^{0} = 180^{0}\\\\90^{0} + 50^{0} + 4y^{0} = 180^{0} \\\\4y^{0} = 180^{0} - 90^{0} - 50^{0} \\\\y^{0} = 10^{0}[/tex]

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Thus, the probability that two custard-filled donuts are selected in a row) 11/46.

sampling without replacement is the process of selecting a subset of observations at random; once an observation is chosen, it cannot be chosen again. sampling with replacement, whereby one observation may be chosen more than once and a subset of observations is chosen at random.

Given data:

two-dozen (24) donuts

probability = favourable outcome / total outcome

probability (1st custard-filled donut) = total custard-filled donut / total donuts

probability (1st custard-filled donut) = 12/24

probability (1st custard-filled donut) = 1/2

Now,1 is already taken, now total donuts left are 23 with 11 custard-filled donut.

probability (2nd custard-filled donut) = total custard-filled donut / total donuts

probability (2nd custard-filled donut) = 11/23

Now,

probability (two custard-filled donuts in a row) = 1/2 * 11/23

probability (two custard-filled donuts in a row) = 11 / 46

Thus, the probability that two custard-filled donuts are selected in a row) 11/46.

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The correct answer is: Fast Chicken, because it has a smaller median.

What is median?

Median is a measure of central tendency that represents the middle value in a dataset when the values are arranged in order of magnitude. To find the median, you need to arrange the values in order from smallest to largest and then find the middle value.

Based on the information provided, the drive-thru restaurant with less wait time is Fast Chicken, as it has a smaller median wait time of 12.5 minutes compared to the median wait time of 12 minutes for Super Fast Food. The mean wait time is not given, and even if it were, the median is a better measure of central tendency to compare in this scenario, as the box plots suggest some potential outliers.

Therefore, the correct answer is: Fast Chicken, because it has a smaller median.

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According to the information, the number of people who likes folk song is 90, and the number of people who likes modern song 80. So, the total number of people in the survey is 250.

Let the number of people who like modern songs be 8x, and the number of people who like folk songs be 9x.

From the given information, we know that:

50 people like both modern and folk songs

40 people like only folk songs

The total number of people who like at least one type of song is (8 + 9)x - 50 = 17x - 50

80 people like none of the songs

Therefore, we can write the following equation:

(8x + 9x) - 50 - 40 + 80 = 17x

Simplifying this equation, we get:

17x - 10 = 17x

Thus, x = 10.

So, the number of people who like folk songs is 9x = 9(10) = 90.

Similarly, the number of people who like modern songs is 8x = 8(10) = 80.

The total number of people in the survey is the sum of the number of people who like modern songs, the number of people who like folk songs, and the number of people who like none of the songs.

So, the total number of people in the survey is:

80 + 90 + 80 = 250.

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To determine the effect of the interaction of the number of pages and cover type on cost, a statistical analysis would need to be performed using data on the number of pages, cover type, and cost. The analysis would likely involve running a regression model that includes both the number of pages and cover type as predictor variables, as well as an interaction term between the two.

 To answer your question, the effect of the interaction between the number of pages and cover type on the cost can be determined through a step-by-step process:

1. Identify the base cost of each cover type (e.g., hardcover, paperback, etc.).
2. Determine the cost per additional page for each cover type.
3. Calculate the cost for a specific number of pages and cover type by adding the base cost and the cost of additional pages.

For example:
- Base cost for hardcover: $5.00
- Base cost for paperback: $3.00
- Cost per additional page for hardcover: $0.10
- Cost per additional page for paperback: $0.05

Now, let's say you want to find the cost of a 100-page hardcover book:

1. Start with the base cost of a hardcover: $5.00
2. Multiply the number of pages (100) by the cost per additional page for hardcover ($0.10): 100 * $0.10 = $10.00
3. Add the base cost and the cost of additional pages: $5.00 + $10.00 = $15.00

So, the cost of a 100-page hardcover book is $15.00.

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Answer:

I dont know the answer to be honest..

JUST KIDDING.. ill answer this step by step lol

To solve the inequality 9/x + 81 > 45, we can follow these steps:

Step 1: Subtract 81 from both sides of the inequality to isolate the fraction on the left-hand side:

9/x + 81 - 81 > 45 - 81

9/x > -36

Step 2: Take the reciprocal of both sides of the inequality to eliminate the fraction:

1 / (9/x) < 1 / (-36)

x/9 < -1/36

Step 3: Multiply both sides of the inequality by 9 to get rid of the fraction in the numerator:

9 * (x/9) < 9 * (-1/36)

x < -1/4

So, the solution to the inequality 9/x + 81 > 45 is x < -1/4. This means that x must be less than -1/4 for the inequality to be true.

A control group on the dependent variable, P-value is higher than the usual cutoff of 0.05 for rejecting the null hypothesis that there is no difference between the groups, this is frequently regarded as evidence that the difference between the groups is not statistically significant.

In an analysis testing difference between an experimental and a control group on the dependent variable, a p-value of 0.07 means that there is a 7% chance of obtaining a difference as large or larger than the observed difference between the two groups, assuming that there is no true difference between the groups in the population.

Interpreted as evidence that the difference between the groups is not statistically significant, since the p-value is greater than the conventional threshold of 0.05 for rejecting the null hypothesis of no difference between the groups.

Statistical significance does not necessarily imply practical significance, and there may still be a meaningful difference between the groups that is not detected by the statistical test.

Additionally, the interpretation of a p-value depends on the study design, sample size, and other factors, and should be considered in conjunction with other information about the study.

True difference between the groups in the population, a p-value of 0.07 indicates that there is a 7% chance of finding a difference as large or larger than the observed difference between the two groups in an analysis testing the difference between an experimental and a control group on the dependent variable.

P-value is higher than the usual cutoff of 0.05 for rejecting the null hypothesis that there is no difference between the groups, this is frequently regarded as evidence that the difference between the groups is not statistically significant.

It's crucial to remember that statistical significance does not always imply practical relevance.

There could still be a significant difference between the groups that is not shown by statistical analysis.

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The company must produce and sell at least 857 bottles of juice in a day to break-even, given the given expenses and selling price per bottle.

Let's denote the number of bottles of juice sold in a day as "x".

The total cost of production and business expenses :

Total cost = Business expenses + (Cost per bottle of juice) x (Number of bottles produced and sold)

Total cost = $1200 + $1.10x

The revenue generated from selling "x" bottles :

Revenue = (Selling price per bottle of juice) x (Number of bottles produced and sold)

Revenue = $2.50x

The company will break-even when revenue equals total cost, so we can set two expressions equal to each:

[tex]\\$2.50x = $1200 + $1.10x\\$2.50x - $1.10x = $1200\\$1.40x = $1200\\x = $1200 / $1.40\\[/tex]

x ≈ 857

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