When purchasing a car, a buyer will often trade in his current car Sales tax is figured after the amount of the trade-in is deducted from the cost of thenew car. This sales tax can be calculated using a function. If the sales tax is 7% and a trade-in is valued at $2,000, select the function that could be usedto correctly calculate the sales tax as a function of the cost of the car (x)

When Purchasing A Car, A Buyer Will Often Trade In His Current Car Sales Tax Is Figured After The Amount

Answers

Answer 1

Given:

The rate of sales tax, r=7%.

The amount of trade in, t=$2000.

Let x be the cost of the car.

It is given that the sales tax is calculated after deducting the trade in amount from the cost of the car.

So, the sale tax will be calculated on x-t=x-2000.

Hence, the sales tax as a function of x can be expressed as,

[tex]\begin{gathered} f(x)=\frac{r}{100}(x-2000) \\ =\frac{7}{100}(x-2000) \\ =0.07(x-2000) \end{gathered}[/tex]

Therefore, the expression for the sales tax as a function of the cost of the car is f(x)=0.07(x-2000).


Related Questions

Which of the following expressions are equivalent to…I will take a screenshot of the expression I need help with.

Answers

Given:

[tex]-\frac{2}{-13}[/tex]

You can move the negative anywhere or in front of the fraction.

[tex]-\frac{2}{-13}=\frac{-2}{-13}=-\frac{-2}{13}[/tex]

Answer:

A. and B.

Which of the figures below is the correct construction of an angle bisector?

Answers

The final step coincides with option 4

Given cos theta= -7/25 and theta lies in quadrant II Find tan 2 theta

Answers

Answer:

336/527

Explanation:

If cos θ = -7/25, then we can represent these angle as:

Because -7 is the adjacent side and 25 is the hypotenuse of the triangle.

So, to know what is tan θ, we need to find the value of x. Then, using the Pythagorean theorem, we get that x is equal to:

[tex]\begin{gathered} x=\sqrt[]{25^2-(7)^2} \\ x=\sqrt[]{625-49} \\ x=\sqrt[]{576} \\ x=24 \end{gathered}[/tex]

Now, tan θ is equal to:

[tex]\begin{gathered} \tan \theta=\frac{Opposite\text{ side}}{\text{Adjacent side}} \\ \tan \theta=\frac{24}{-7} \\ \tan \theta=-\frac{24}{7} \end{gathered}[/tex]

Then, there is a trigonometric identity that says that tan 2θ is equal to:

[tex]undefined[/tex]

2\12 reducing fraction

Answers

we have

[tex]\frac{2}{12}[/tex]

remember that

12=(2)(2)(3)

substitute in the given expression

[tex]\frac{2}{2\cdot2\cdot3_{}}=\frac{1}{2\cdot3}=\frac{1}{6}[/tex]

Convert 2 3/4 to a decimal number.A. 3.5B. 2.75C. 2.5D. 1.5

Answers

To convert mixed number to decimal form, simply convert the fraction part to decimal. To convert, divide the numerator by the denominator.

[tex]3\div4=0.75[/tex]

Add the result to the whole number.

[tex]2+0.75=2.75[/tex]

Hence, 2 3/4 in decimal form is 2.75 (Option B).

Basilico's 27 equal strips from a 6-yard spoon of ribbon which expression shows the number of yards used for one strip of ribbon

Answers

∵ The 27 equal strips made from a 6-yard ribbon

∴ The length of each strip is

[tex]\frac{6}{27}[/tex]

Each strip is 6/27 yards

The answer is A

Write the rate as unit rate 702 riders in 9 subway cars

Answers

Given:

702 riders in 9 subway cars.

Required:

To write the rate as a unit.

Explanation:

Consider 702 numerator part and 9 in denominator part.

Therefore, the unit rate is

[tex]\begin{gathered} =\frac{702}{9} \\ =78 \end{gathered}[/tex]

Final Answer:

Unit rate is 78.

Calculate the monthly percentage rate if the APR is 16.99%. Round your monthly percentage rate to the nearest hundredth of a percent.

Answers

Given:

APR = 16.99%

The Annual Percentage Rate is the interest rate charged yearly.

Given that there are 12 months in a year, to find the monthly percentage, divide the APR by 12.

Therefore, we have:

[tex]\text{Monthly percentage = }\frac{16.99}{12}=1.42^{}\text{ percent}[/tex]

Therefore, the monthly percentage rate to the nearest hundreth of a percent is 1.42%

ANSWER:

1.42%

Can you please help me

Answers

The formula to find the area of a circle is

[tex]\begin{gathered} A=\pi r^2 \\ \text{ Where A is the area and} \\ r\text{ is the radius of the circle} \end{gathered}[/tex]

So, in this case, you have

[tex]\begin{gathered} r=21ft \\ \text{ Because} \\ \text{radius =}\frac{\text{ diameter}}{2} \\ \text{radius =}\frac{42ft}{2} \\ \text{radius =}21ft \end{gathered}[/tex][tex]\begin{gathered} A=\pi(21ft)^2 \\ A=\pi\cdot441ft^2 \\ A=1385.44ft^2 \end{gathered}[/tex]

Therefore, the area of this circle is 1385.44 square feet.

simplify the following inequalitywrite your answer in inequality notation ? graph the inequalitywrite your answer in interval notation

Answers

We will have the following:

First, we simplify:

[tex]\begin{gathered} 5x+3<-27\Rightarrow5x<-30 \\ \Rightarrow x<-6 \end{gathered}[/tex]

And:

[tex]2x+0\ge0\Rightarrow x\ge0[/tex]

So, the solution in interval notation is:

[tex](-\infty,-6)\cap\lbrack0,\infty)[/tex]

LINEAR GRAPH A linear graph must be a straight line. UNEAR NON-LINEAR R o #4 #3 С

Answers

Linear graph

As stated in the question, a linear graph must be represented by a straight line.

Curved lines cannot be classified as linear graphs.

From the choices presented, the following are linear graphs:

#1. Is a linear graph, or a horizontal line

#4 is a linear graph, or a slanted line

#2 is non-linear because it's a circle

#3 is non-linear because it's curved

Suppose a ball is dropped from an initial height of 10 feet and loses 40% of its height after every bounce. Complete the table to give the heights of the ball after the first 4 bounces. Bounce Height after Bounce 1 ? 2 ?3 ?4 ?Write the equation for the height of the ball, y, after x bounces, and fill out the chart.

Answers

Answer:

[tex]y=10(0.9)^x[/tex]

Explanation:

The ball is dropped from an initial height of 10 feet.

It loses 10% of its height after every bounce.

• An equation for the height of the ball, y, after x bounces is derived below:

[tex]\begin{gathered} y=10(1-10\%)^x \\ y=10(1-0.1)^x \\ y=10(0.9)^x \end{gathered}[/tex]

Substitute the values of x=1,2,3 and 4 respectively:

[tex]\begin{gathered} When\; x=1,y=10(0.9)^1=9\text{ feet} \\ When\; x=2,y=10(0.9)^2=8.1\text{ feet} \\ When\; x=3,y=10(0.9)^3=7.29\text{ feet} \\ When\; x=4,y=10(0.9)^4=6.561\text{ feet} \end{gathered}[/tex]

Find a polynomial f(x) of degree 4 that has the following zeros. -5, 9 (multiplicity 2), 0

Answers

We are to find a polynomial f(x) of degree 4 that has the following zeros.

-5, 9 (multiplicity 2), 0

So,

The degree 4 polynomial of the given zeros is:

But recall, that there is a multiplicity which tells the number of times a factor occurs

So, x = 9 occurred twice.

Therefore, the degree 4 polynomial of the given zeros:

f(x) = x(x + 5)(x - 9)(x - 9)

So in a factored form:

f(x) = x(x + 5)(x - 9)(x - 9)

Write each number in standard form. Include Commas and decimal points when necessary! Double check your answer before submitting.

Answers

Given:

[tex]2.54\times10^2[/tex]

Let's write the given expression in standard form.

To write in standard form, since the exponent is positive 2 we are to move the decimal point two places to the right.

Thus, we have the standard form below:

[tex]2.54\times10^2=254[/tex]

Therefore, the number in standard form is = 254

ANSWER:

[tex]254[/tex]

Estimate the solution to the following system of equations by graphing. [tex]3x + 5y = 14[/tex][tex]6x - 4y = 9[/tex]

Answers

Given -

3x + 5y = 14

6x -4y = 9

To Find -

x and y =?

Step-by-Step Explanation -

3x + 5y = 14 .....(1)

6x -4y = 9 ......(2)

Multiply equation (1) with ×2

We get

6x + 10y = 28 ......(3)

Now,

(3) - (2)

6x + 10y - 6x + 4y = 28 - 9

14y = 19

y = 19/14

So, on putting the value of y in eq(1)

We get

3x + 5(19/14) = 14

14(3x) + 95 = 196

42x = 101

x = 101/42

Graph:

The area of the rectangle shown is 34 square inches.4 inchesWhat is the length of the base of the rectangle in inches?

Answers

The formula for any give rectangle is just that you multiply it's lenght by it's width, or as expressed by the equation;

[tex]\text{Area}=length\text{ x width}[/tex]

Since in the picture we are given a side of the rectangle measuring 4 inches, with it's length as unkown, we can only assume that the 4 inches there is the width therefore for a sqaure with an area of 34 square inches, we can express it as;

[tex]\begin{gathered} \text{Area = lenght x width , where Area = 34, and width = 4} \\ 34\text{ = lenght x 4 , then divide both sides by 4} \\ \frac{34}{4}=\frac{4}{4}(lenght)\text{ , and remember that }\frac{4}{4}\text{ = 1} \\ \text{lenght = }\frac{34}{4} \\ \text{lenght = 8.5} \end{gathered}[/tex]

Therefore the lenght of the rectangle in our question is 8.5 inches.

help!!!!! this ends in 12 minutes Find the value of x. The diagram is not to scale. Given: RS , ST, MZRTS - 5x - 18. mZSTU- 6x T O 18 108 © 20 23

Answers

Given Data:

[tex]\begin{gathered} RS\cong ST \\ \angle RTS=5x-18 \\ \angle STU=6x \end{gathered}[/tex]

Using the property of linear pair,

[tex]\begin{gathered} \angle RTS+\angle STU=180 \\ 5x-18+6x=180 \\ 11x=198 \\ x=18 \end{gathered}[/tex]

Thus, option (A) is the correct answer.

Fine, and radians in degrees, the inclination theta of the line with the equation -5x - 13y - 66 =0

Answers

Given

[tex]-5x-13y-66=0[/tex]

Transform it into its slope-intercept form, as shown below

[tex]\begin{gathered} \Rightarrow y=-\frac{5}{13}x-\frac{66}{13} \\ \end{gathered}[/tex]

Then, the slope of the line is -5/13.

On the other hand, the inclination angle of a line is given by the formula below

[tex]\begin{gathered} m=tan\theta \\ \Rightarrow\theta=\tan^{-1}(m) \\ \theta\rightarrow\text{ inclination angle} \\ m\rightarrow\text{ slope} \end{gathered}[/tex]

Therefore, in our case,

[tex]\begin{gathered} \Rightarrow\theta=\tan^{-1}(-\frac{5}{13}) \\ \Rightarrow\theta=-0.3671738...\text{ radians} \\ or \\ \theta=-21.04\degree \end{gathered}[/tex]Thus, the answer is -0.3671738... radians or -21.04°

What do you know to be true about the values of a and b?bº775aA. abD. Can't be determined

Answers

The answer is D. can't be determined

we need more details t

mary question word problem please can u show work on the picture for me to understand it get confusing when it's not marked what question

Answers

a. The company produces 52 boxes per hour. Then, after 3 hours they produce 52*3 = 156 boxes. If they had 404 boxes after 3 hours, then they started with 404 - 156 = 248 boxes.

Given that they produce 52 boxes per hour, then after h hours, they produce 52h boxes. Therefore, the number of boxes, b, as a function of the number of hours, h, is:

b = 248 + 52h

b. Replacing with h = 8, we get:

b = 248 + 52(8)

b = 248 + 416

b = 664

There will be 664 boxes after an 8-hour shift

Find the unit rate:3 tablespoons for 1.5 servings.

Answers

[tex]\text{unit rate =}2\frac{tablespoon}{\text{serving}}[/tex]

Explanation

A unit rate is a rate where the bottom number is 1 (also called a single-unit rate),it can be found using the expression

[tex]\text{unit rate = }\frac{total\text{ amount}}{\text{total el}emets}[/tex]

Step 1

Let

total amount = 3 tablespoons

total elements = 1.5 serving, so replacing

[tex]\begin{gathered} \text{unit rate = }\frac{total\text{ amount}}{\text{total el}emets} \\ \text{unit rate =}\frac{3\text{ tablespoons}}{1.5\text{ servings}}=2\text{ tablespoons per serving} \\ \text{unit rate =}2\frac{tablespoon}{\text{serving}} \end{gathered}[/tex]

therefore, the answer is

[tex]\text{unit rate =}2\frac{tablespoon}{\text{serving}}[/tex]

I hope this helps you

I need an answer a b c or d I know how to do the scratch workdetermine the angle measures in the polygon

Answers

The sum of the interior angles of a pentagon is 540°. A pentagon is a polygon with five sides and five vertices.

So, in this case, you have

[tex]x\text{\degree}+135\text{\degree}+x\text{\degree}+x\text{\degree}+135\text{\degree}=540\text{\degree}[/tex]

Now, you can solve for x

[tex]\begin{gathered} x\text{\degree}+135\text{\degree}+x\text{\degree}+x\text{\degree}+135\text{\degree}=540\text{\degree} \\ \text{ Add similar terms} \\ 3x\text{\degree}+270\text{\degree}=540\text{\degree} \\ \text{ Subtract 270\degree{}from both sides of the equation} \\ 3x\text{\degree}+270\text{\degree-270\degree}=540\text{\degree-270\degree} \\ 3x\text{\degree}=270\text{\degree} \\ \text{ Divide by 3 into both sides of the equation} \\ \frac{3x\text{\degree}}{3}=\frac{270\text{\degree}}{3} \\ x=90\text{\degree} \end{gathered}[/tex]

Therefore, the angle measures in the polygon are 90°,135°,90°,90°,135°.

Find m∠1 and m∠3 in the kite. The diagram is not drawn to scale. (image attached)thank you ! :)

Answers

ANSWER

[tex]\begin{gathered} <1=39\degree \\ <3=51\degree \end{gathered}[/tex]

EXPLANATION

We want to find the measures of <1 and <3 in the kite given.

The diagonals of a kite bisect each other at right angles.

This implies that:

[tex]<2=90\degree[/tex]

Since the longer diagonal of the kite bisects the angle [tex]<1=39\degree[/tex]We can solve for <3 using the sum of angles in a triangle:

[tex]<3+39+90=180[/tex]

Simplify and solve for <3:

[tex]\begin{gathered} <3=180-90-39 \\ <3=51\degree \end{gathered}[/tex]

That is the answer.

7. An equation is shown.7 m = 105 What is the value for m that makes the equation true?

Answers

In order to find the value of m in this equation, we just need to divide both sides of the equation by 7.

So we have that:

[tex]\begin{gathered} 7m=105 \\ \frac{7m}{7}=\frac{105}{7} \\ m=\frac{105}{7} \\ m=15 \end{gathered}[/tex]

So the value of m that makes the equation true is m = 15.

1. A marine biologist recorded the number of deaths of specific fish species from the last 10 years (1 point)due to pollution in a specific area off the Pacific coast. She was curious to see if there was atrend. Identify the best mathematical model with its corresponding R? value and tell whether itis a good model.

Answers

We have to see which model (quadratic or linear) best represents the data.

We can use software to fit this data set.

Linear model:

Quadratic model:

The quadratic model has a slightly better fit than the linear model.

But the value of R² = 0.176 shows that the fit is very weak, so we can conclude that this is not a good model for the data.

Answer:

Quadratic model, 0.176.

No, 0.176 is a very low R² value.

How would I solve the system of inequalities?Is the procedure correct?

Answers

To plot the line of the inequality , we begin by inserting the values x = 0 and y = 0 one after the other.

[tex]\begin{gathered} 4x+5y>20 \\ \text{When x = 0, then} \\ 4(0)+5y=20 \\ 5y=20 \\ y=4 \\ \text{That gives us the point (0, 4)} \\ \text{Similarly when y = 0, then} \\ 4x+5(0)=20 \\ 4x=20 \\ x=5 \\ \text{That gives us the point (5, 0)} \\ \text{With these two points we can now plot a line by joining both points with a ruler} \\ \text{Note also that the inequality can now be expressed as;} \\ 4x+5y>20 \\ 5y>20-4x \\ y>\frac{20-4x}{5} \\ y>\frac{20}{5}-\frac{4x}{5} \\ y>4-\frac{4}{5}x \\ y>-\frac{4}{5}x+4 \end{gathered}[/tex]

Letus now derive two points for the second inequality given just like we did for the first one above;

[tex]\begin{gathered} -3x+7y\ge7 \\ \text{When x = 0, then } \\ -3(0)+7y=7 \\ 7y=7 \\ y=1 \\ \text{This gives us the point (0, 1)} \\ \text{Also, when y = 0, then} \\ -3x+7(0)=7 \\ -3x=7 \\ x=-\frac{7}{3}\text{ (OR x=-2}\frac{1}{3}) \\ \text{That gives us the point (-2}\frac{1}{3},0) \\ \text{The equation can now be expressed as} \\ -3x+7y\ge7 \\ 7y\ge7+3x \\ y\ge\frac{7+3x}{7} \\ y\ge\frac{7}{7}+\frac{3x}{7} \\ y\ge1+\frac{3}{7}x \\ y\ge\frac{3}{7}x+1 \end{gathered}[/tex]

The graph of both inequalities is now shown below;

Observe carefully that the solution lies in the region shaded BLUE and RED.

One point in this region is (4, 4)

The blue and red graphs are represented by;

[tex]\begin{gathered} y>-\frac{4}{5}x+4\text{ (RED graph)} \\ y\ge1+\frac{3}{7}x\text{ (BLUE graph)} \end{gathered}[/tex]

Write the following in scientific notation: 2.004 x 1^11

Answers

[tex]\begin{gathered} 2.004\times1^{11} \\ 2.004\text{ }\times10^{11} \end{gathered}[/tex][tex]\begin{gathered} 56\times10^{-4} \\ 5.6\times10^{-3} \end{gathered}[/tex]

(a)What is the domain of the relation ? Enter a value on the same line , separated by commas (b)What is the range of the relation ? Enter a value on the same line , separated by commas

Answers

Answer:

• Domain: {1,2,3,7,9}

,

• Range: {1,4,6,7,8}

Explanation:

Given the relation in the table, we are required to find the domain.

Domain

The domain is defined as the set of all the values of x that satisfies the relation.

From the table, the domain is:

[tex]\{1,2,3,7,9\}[/tex]

Range

The range is defined as the set of all the values of y that satisfies the relation.

From the table, the range is:

[tex]\{1,4,6,7,8\}[/tex]

Jonh is building a stage for a school play. The stage is 15 1/2 feet long and 20 feet wide. Select ALL options that represent the area of the stage, in square feet. A. 31/2 X 1/20B. 30/2 X 20 C. 31/2 X 20D. 300E. 310

Answers

To solve this problem, recall that the area of a rectangle is given by the following formula:

[tex]A=wide\times length.[/tex]

Therefore, the area of the stage is:

[tex](15\frac{1}{2}\times20)ft^2.[/tex]

Converting the mixed number to an improper fraction, you get:

[tex]15\frac{1}{2}\times20=\frac{31}{2}\times20.[/tex]

Computing the multiplication you get:

[tex]310.[/tex]Answer: [tex]310,\frac{31}{2}\times20.[/tex]

Open-Ended You invest $1,000 in each of two accounts. Account A earns simple interest at a rateof 2.42% over 4 years. Account B earns simple interest at a rate of 2.42% over 24 months. Find theinterest earned by each account. How does the interest earned by the two accounts compare?Use paper and pencil. Give an example of two principal amounts and two simple interest rates thatwould earn equal amounts of interest in one year. Give an example of two principal amounts andtwo periods of time for which the simple interest earned at 2.76% would be equal.Account A earns $ after 4 years.(Simplify your answer. Type an integer or a decimal.)

Answers

Account A:

Initial Deposit 1000

2.42% for 4 years

Account B:

Initial Deposit 1000

2.42% in 24 months

We have to find the simple interest earned in each account. The formula for simple interest is:

[tex]i=\text{Prt}[/tex]

Where

i is the interest earned

P is the initial amount

r is the rate of interest, in decimal

t is the tiem

For account A:

P = 1000

r = 2.42% = 0.0242

t = 4 years

Thus, the interest earned is:

[tex]\begin{gathered} i=\text{Prt} \\ i=1000\times0.0242\times4 \\ i=96.8 \end{gathered}[/tex]

For account B:

P = 1000

r = 0.0242

t = 24 months = 24/12 = 2 years

Thus, the interest earned is:

[tex]\begin{gathered} i=\text{Prt} \\ i=1000\times0.0242\times2 \\ i=48.4 \end{gathered}[/tex]

example:

i = Prt

Since we want an example where interest amount is same in a a year, we know i and t are constant. We just need to figure out two P's and two r's that give the same value.

Suppose the initial deposit is 2000 and the rate of interest is 5%.

Now, suppose intial deposit is 500 and rate of interest is 20%.

They would both equate the same interest in 1 year.

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