The trigonometry identity value of sin(A) is -2/5
Solving the trigonometry identityFrom the question, we have the following parameters that can be used in our computation:
sin(A) = 2/5 sin^2(A) + cos^2(A) = 1 The angle A is in Quadrant IVThe value of sin(A) has already been given
However, because the angle A is in Quadrant IV, the value of the trigonometry identity would be negative (sine are negative in the 4th quadrants)
So, we have
sin(A) = -2/5
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A car is driving away from El Paso with constant velocity. At 1 p.m., it is 145 miles away from El Paso. At 3 p.m., it is 275 miles away from El Paso.
Part A: Write a linear function that describes the distance (in miles) the car is from El Paso in terms of time (in hours after 12:00 p.m.).
The linear function that describes the distance (in miles) is therefore y = 65x + 80
How to solve for the linear functionWe have to find the slope and the intercept in other to get the linear function
The data points are:
(1, 145) and (3, 275).
m = (y2 - y1) / (x2 - x1)
fixing the data points we have
m = (275 - 145) / (3 - 1)
= 130 / 2
= 65
y = mx + b
(1, 145):
145 = 65(1) + b
b = 145 - 65
= 80
y intercept is 80
The linear function is therefore y = 65x + 80
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The volume of the triangular pyramid below is 210 units³. Find the value of x.
The value of x as shown in the triangular prism is 14 unit.
What is traingular pyramid?Triangular pyramids are formed solely from triangles. The 3 triangular sides slant upwards to form the triangular base.
To calculate the value of x of the rectangular pyramid, we use the formula below
Formula:
V = bhH/6............................. Equation 1Where:
V = volume of the Pyramidb = Base of the triangleh = Height of the triangleH = Height of the pyramidFrom the diagram and the question,
Given:
V = 210 unit³b = 10h = 9 H = xSubstitute these values into equation 1 and solve for x
210 = (10×9×x)/6210 = 15xx = 210/15x = 14 unitHence, the value of x is 14 unit.
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Factor each polynomial using difference of squares. Check for common factors first.
a) x² – 36
b) 3x² - 12
Factor the following using the trinomial method. Check for common factor first.
a) x² + 6x + 9
b) 4x² - 8x - 60
PLS HELP!!!!! I ONLY HAVE 2 HOURS!!!
The results of factoring the polynomials are (x - 6)(x + 6), 3(x - 2)(x + 2), (x + 3)² and 4(x + 3)(x - 5)
Factoring using difference of squaresFirst, we have
x² – 36
Applying the property of difference of squares, we have
(x - 6)(x + 6)
Next, we have
3x² - 12
Factor out 3
3(x² - 4)
Applying the property of difference of squares, we have
3(x - 2)(x + 2)
Factoring the following using the trinomial methodFirst, we have
x² + 6x + 9
Expand and factorize
x² + 6x + 9 = x² + 3x + 3x + 9 = (x + 3)²
Next, we have
4x² - 8x - 60
Expand and factorize
4x² - 8x - 60 = 4(x² - 2x - 15) = 4(x + 3)(x - 5)
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answer this please i need help with this problem
The value of x in the triangle is 1/√3
We know that tan function is the ratio of opposite side and adjacent side
In triangle, for angle 60 degrees the opposite side is 1 unit
Adjacent side is x units
tan 60 = opposite side/adjacent side
√3= 1/x
We need to find value of x
Apply cross multiplication
x=1/√3
Hence, the value of x in the triangle is 1/√3
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A rectangular aquarium measures 21 inches long by 11 inches wide by 18 inches tall. If the aquarium is filled to the 15 inch mark, what is the volume of the water in the aquarium?
The volume of water in the aquarium up to the 15 inch mark is 3465 cubic inches.
What is the volume of the water in the aquarium?A rectangular prism is simply a three-dimensional solid shape which has six faces that are rectangles.
The volume of a rectangular prism is expressed as;
V = w × h × l
Where w is the width, h is height and l is length
The volume of water in the aquarium up to the 15 inch mark will be equal to the volume of a rectangular prism with a length of 21 inches, a width of 11 inches, and a height of 15 inches.
This is because the water level is 15 inches from the bottom of the aquarium.
Hence, the volume of water in the aquarium up to the 15 inch mark is:
V = l × w × h
V = 21 × 11 × 15
V = 3465 cubic inches
Therefore, the volume of water in the aquarium is 3465 cubic inches.
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A mixture of 50% alcohol and 50% water has 4 liters of water added to it. It is now 25% alcohol. What was the total volume of the original mixture? (Please mention the numeric value.)
The total volume of the original mixture is 4 liters.
Given that:
A mixture of 50% alcohol and 50% water has 4 liters of water added to it. It is now 25% alcohol.
Let 'x' be the amount of water and alcohol. Then we have
x / (x + x + 4) = 0.25
x/(x + 2) = 0.5
2x = x + 2
x = 2
The total volume of the original mixture is calculated as,
Total volume = x + x
Total volume = 2 + 2
Total volume = 4 liters
The total volume of the original mixture is 4 liters.
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Select the correct answer. Which graph represents the given exponential function? f(x)=5(3)x-1
A.
B.
C.
D.
The graph of the function f(x) = 5(3)ˣ - 1 is represented as the diagram given in option C.
To find the main points of the function f(x) = 5(3)ˣ - 1, we can identify its key features such as the y-intercept, x-intercept, and any asymptotes.
Y-intercept:
To find the y-intercept, we set x = 0 and evaluate the function:
f(0) = 5(3)⁰ - 1 = 4
Therefore, the y-intercept is (0,4).
Asymptotes:
There are no vertical asymptotes for this function since the base of the exponential function, 3, is positive.
The graph of the function is given in the attached image.
Therefore, the correct option is C.
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find f(g(2)), g(f(2)) given f(x)=3x+5 and g(x)=-7x+6
The two compositions give:
f(g(2)) = -19g(f(2)) = -71How to evaluate the compositions?Here we have two functions:
f(x) = 3x + 5
g(x) = -7x + 6
And we want to fin the two compositions:
f(g(2))
g(f(2))
First, let's find g(2) = -7*2+ 6 = -14 + 8 = -8
Then:
f(g(2)) = f(-8) = 3*-8 + 5 = -19
Now the other one:
f(2) = 3*2 + 5 = 11
Evaluating g in that:
g(11) = -7*11 + 6 = -77 + 6 = -71
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At Jamie's bank, 20 bankers manage personal loans and 15 bankers manage business loans. Of those, 3 bankers manage both. If the bank only offers these two types of loans, how many bankers does it employ? A. 17 B. 32 C. 35 D. 38
The bank employs a total of 32 bankers, and the answer is not listed among the options provided. The correct option is B.
Let's denote the number of bankers who manage only personal loans as P and the number of bankers who manage only business loans as B. Then, we can use the following information to form equations:
There are 20 bankers who manage personal loans, which means P + 3 bankers in total manage personal loans.
There are 25 bankers who manage business loans, which means B + 3 bankers in total manage business loans.
The bank has a total of X bankers.
Using these equations, we can solve for X as follows:
P + 3 = 20 (equation 1)
B + 3 = 25 (equation 2)
P + B + 3 = X (equation 3)
Solving equation 1 for P, we get P = 17.
Solving equation 2 for B, we get B = 12.
Substituting P = 17 and B = 22 into equation 3, we get:
17 + 12 + 3 = X
Simplifying, we get X = 32.
Therefore, the bank employs a total of 32 bankers, and the answer is not listed among the options provided.
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Find a linear inequality with the following solution set. Each grid line represents one unit.
[asy]
size(200);
fill((2,-5)--(-5,-5)--(-5,5)--(5,5)--(5,-2)--cycle,yellow);
real ticklen=3;
real tickspace=2;
real ticklength=0.1cm;
real axisarrowsize=0.14cm;
pen axispen=black+1.3bp;
real vectorarrowsize=0.2cm;
real tickdown=-0.5;
real tickdownlength=-0.15inch;
real tickdownbase=0.3;
real wholetickdown=tickdown;
void rr_cartesian_axes(real xleft, real xright, real ybottom, real ytop, real xstep=1, real ystep=1, bool useticks=false, bool complexplane=false, bool usegrid=true) {
import graph;
real i;
if(complexplane) {
label("$\textnormal{Re}$",(xright,0),SE);
label("$\textnormal{Im}$",(0,ytop),NW);
} else {
label("$x$",(xright+0.4,-0.5));
label("$y$",(-0.5,ytop+0.2));
}
ylimits(ybottom,ytop);
xlimits( xleft, xright);
real[] TicksArrx,TicksArry;
for(i=xleft+xstep; i 0.1) {
TicksArrx.push(i);
}
}
for(i=ybottom+ystep; i 0.1) {
TicksArry.push(i);
}
}
if(usegrid) {
xaxis(BottomTop(extend=false), Ticks("%", TicksArrx ,pTick=gray(0.1),extend=true),p=invisible);//,above=true);
yaxis(LeftRight(extend=false),Ticks("%", TicksArry ,pTick=gray(0.1),extend=true), p=invisible);//,Arrows);
}
if(useticks) {
xequals(0, ymin=ybottom, ymax=ytop, p=black, Ticks("%",TicksArry , pTick=black+0.8bp,Size=ticklength), above=true, Arrows(size=axisarrowsize));
yequals(0, xmin=xleft, xmax=xright, p=black, Ticks("%",TicksArrx , pTick=black+0.8bp,Size=ticklength), above=true, Arrows(size=axisarrowsize));
} else {
xequals(0, ymin=ybottom, ymax=ytop, p=axispen, above=true, Arrows(size=axisarrowsize));
yequals(0, xmin=xleft, xmax=xright, p=axispen, above=true, Arrows(size=axisarrowsize));
}
};
draw((5,-2)--(2,-5),dashed+red, Arrows(size=axisarrowsize));
rr_cartesian_axes(-5,5,-5,5);
for( int i = -4; i <= 4; ++i) {
draw((i,-5)--(i,5));
draw((-5,i)--(5,i));
}
[/asy]
(Give your answer in "standard form" $ax+by+c>0$ or $ax+by+c\geq0$ where $a,$ $b,$ and $c$ are integers with no common factor greater that 1)
I’ve looked at other people’s answers but my website keeps saying im wrong. If anyone knows how to register this answer to aops, please tell me how
The linear inequality with the solution set (2,-5), (-5,-5), (-5,5), (5,5), (5,-2) are x ≤ 5 and y ≤ 5
Finding a linear inequality with the solution setThe solution set is given as
(2,-5), (-5,-5), (-5,5), (5,5), (5,-2)
We can see that the highest y value in the above ordered pairs is 5
So, we have
y ≤ 5
Also, we can see that the highest x value in the above ordered pairs is 5
So, we have
x ≤ 5
Hence, the linear inequality with the solution set is x ≤ 5 or y ≤ 5
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URGENT!! ILL GIVE BRAINLIEST! AND 100 POINTS
What type of correlation is suggested by the scatter plot?
Positive, weak correlation
Negative, weak correlation
Positive, strong correlation
Negative, strong correlation
No correlation
The half-life of a certain element is 5 days. If you started with 948 grams of this element, how much remains after 30 days?
After 1 half-life, the amount of the element remaining is half of the original amount. After 2 half-lives, the amount remaining is half of the remaining amount after the first half-life. We can continue this pattern until we get to 30 days.
The number of half-lives in 30 days is 30/5 = 6.
So, after 1 half-life, the amount remaining is 948/2 = 474 grams.
After 2 half-lives, the amount remaining is 474/2 = 237 grams.
After 3 half-lives, the amount remaining is 237/2 = 118.5 grams.
After 4 half-lives, the amount remaining is 118.5/2 = 59.25 grams.
After 5 half-lives, the amount remaining is 59.25/2 = 29.625 grams.
After 6 half-lives, the amount remaining is 29.625/2 = 14.8125 grams.
Therefore, after 30 days, 14.8125 grams of the element remains
cos xº [Hint: Change degree into radian] find the derivative from definition
The derivative of the function cos(xº) in radians is y' = -sin(xπ/180)
Finding the derivative of the functionFrom the question, we have the following function definition that can be used in our computation:
cos(xº)
Changing the degree into radian, we have
cos(xπ/180)
Express as a function
So, we have
y = cos(xπ/180)
When the cosine function is differentiated, we have
y' = -sin(xπ/180)
Hence, the differentiated function is y' = -sin(xπ/180)
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DE bisects AC at point B. AC=a+23
and AB = 3a + 4. Find BC.
Y
X
13
2
X
(X) XS
X₁
IV
The values of AB and BC are equal and equal to
13 units.How to find BCInformation given in the problem includes
DE bisects AC at point B
AC = a + 23
AB = 3a + 4
From the definition of a bisector, point B divides AC into two equal sides, this means that
AB = BC = (1/2) * AC
Substituting the value of AC and AB
AB = 3a + 4 = (1/2) * (a + 23)
3a + 4 = (1/2) * (a + 23)
solving for a
2 * (3a + 4) = a + 23
6a + 8 = a + 23
6a - a = 23 - 8
5a = 15
a = 3
Then we have that:
AB = 3a + 4 = 3(3) + 4 = 9 + 4 = 13
and, AB = BC
so BC = 13
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Pamela paid $8.95 for 5 pounds of bananas. How much will it cost to buy 2 pounds of bananas at the same rate?
Answer:
$3.58
Step-by-step explanation:
Because we know that the 2 lbs of bananas will be purchased at the same rate, the price per pound for 5 lbs of bananas is proportional to the price per pound for 2 lbs of bananas.
Thus, we can solve for price, p of 2 lbs of bananas by setting up a proportion:
[tex]\frac{8.95}{5}=\frac{p}{2}\\ \\ 17.90=5p\\\\3.58=p[/tex]
Which expression is equivalent to 12/5x -2 A. 12x-2/5 B. 2(2/5x -1) C. 2/5(6x-10) D. 1/5(12x-10)
Answer:
The answer is D.
[tex] \frac{1}{5}(12x - 10)[/tex]
In circle E, EF = 10 and m
ZFEG = 72°. Find the length of FG.
Express your answer as a fraction times π.
Answer:
Length of FG=
The length of the arc FG is 12.56 units
What is length of an arc?Length of an arc is the distance that runs through the curved line of the circle making up the arc.
An arc is a cut out section of a circle. The circumference is the whole body of the circle.
The length of an arc is expressed as
(tetha))360 × 2πr
where r is the radius and tetha is the angle between the radii.
l = 72/360 × 2 × 3.14 × 10
l = 4521.6/360
l = 12.56 units
therefore the length of the arc FG is 12.56 units
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NEED TO BE DONE ASAP ONLY HAVE 2MIN
Answer:
42 units³
Step-by-step explanation:
You want the volume of a rectangular prism that has a base area of 5 1/4 units² and a height of 8 units.
VolumeThe formula for the volume of a prism is ...
V = Bh
where B is the base area and h is the height perpendicular to the base.
Here, we have B = 5 1/4 u² and h = 8 u. The volume is ...
V = (5 1/4 u²)(8 u) = 42 u³
The volume of the prism is 42 cubic units.
If this figure is cut along the dotted line, what 2 shapes will be made?
The shapes that would be made if the figure is cut along the dotted line are a right angled- triangle and a semi - circle.
How to find the shapes ?Upon reviewing this shape, we observe that it is comprised of two distinct shapes: a right-angled triangle and a semicircle.
This means that if the figure was cut along the dotted lines that joined them, the shapes that would be made are the same shapes which are a right triangle and a semi - circle.
In conclusion, the shapes would be a semi - circle and right triangle.
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A hair dryer has a power of 1,200 W. How much electrical energy does it use in minutes?
Answer:
r 0.6 kWh to run for 30 minutes.
Answer:
ok so it takes 1200 watts for a hair dryer to run for a full hour, that means it takes 600 watts, or 600 Wh, or 0.6 kWh to run for 30 minutes
Step-by-step explanation:
UCM college administrators claim that the average freshman enrollment over the last 10 years meets the university's capacity of 6,500 students. You believe hypothesize this is inaccurate and believe that UCM is underestimating the number of college freshman. Using a sample of 500
students, you determine a sample mean of 6,600 freshman. Assume o = 1,000 and a = .05.
The t-statistic value of the hypothesis is 2.236
The population mean is equal to 6,500 (H0: μ = 6500)
Alternative hypothesis:
The population mean is greater than 6,500 (Ha: μ > 6500)
We are given the sample mean (x) = 6,600, sample size (n) = 500, population standard deviation (σ) = 1,000, and level of significance (α) = 0.05.
First, we need to calculate the t-statistic using the formula:
t = (X - μ) / (σ / √n)
where X is the sample mean, μ is the population mean, σ is the population standard deviation, and n is the sample size.
Substituting the given values, we get:
t = (6,600 - 6,500) / (1,000 / √500)
= 2.236
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A contractor can by two types of wood. she got 45 expensive wood and 60 cheap wood for the same total price. if the 45 expensive wood cost $3.00 more than the 60 cheap wood, then which equation below shows the correct relationship between the 2 types of wood that she purchased. Also (x =price of the 60 cheap wood)
A.45(x+3)=60x
B.45(x-3)=60x
C.60(x-3)=45x
D.60(x+3)=45x
Answer:
A. 45(x+3)=60x
Step-by-step explanation:
Ravi is saving money to buy a game. The game costs $12, and so far he has saved one-fourth of this cost. How much money has Ravi saved?
Answer:
$3
Step-by-step explanation:
since $12 is 4/4 and he save 1/4 its 12÷4
Answer:
$3
Step-by-step explanation:
12 divided by 4 is 3
(3+3)+(3+3)
6+6
= 12
Donovahn made two bracelets for a friend. Each bracelet is made of 36 beads. Bracelet A contains 12 letter beads Bracelet B contains 20 letter beads. Which statement is true?
Based on the conditions, the correct statements are,
⇒ Bracelet B has 8 more letter beads than Bracelet A.
We have to given that;
Donovahn made two bracelets for a friend.
And, Each bracelet is made of 36 beads. Bracelet A contains 12 letter beads Bracelet B contains 20 letter beads.
Hence, We have;
Based on the information provided, we can say that Bracelet B contains more letter beads than Bracelet A.
Specifically, Bracelet B has 8 more letter beads than Bracelet A.
Thus, Based on the conditions, the correct statements are,
⇒ Bracelet B has 8 more letter beads than Bracelet A.
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Find the value of a
Answer is 3
Step-by-step explanation:
Use the Ratio Test since Ratio Test guarantee absolutely convergence.
[tex] \frac{ ( - 1) {}^{k + 1}(k + 1) {}^{a} }{5 {}^{k + 1}(3(k + 1) } \times \frac{5 {}^{k}(3k) }{(k) {}^{a} ( - 1) {}^{k} } [/tex]
This simplifes to
[tex] \frac{( - 1) {}^{k} ( - 1) ((k + 1)!) {}^{a} }{5 {}^{k}(5)(3k +1) ! } \times \frac{5 {}^{k} (3k)!}{( - 1) {}^{k} (k!) {}^{a} } [/tex]
[tex] \frac{ - (k + 1) {}^{a} }{5(3k + 3)(3k + 2)(3k + 1)} [/tex]
Take the absolute value
[tex] \frac{(k + 1) {}^{a} }{5(3k + 3)(3k + 2)(3k + 1)} [/tex]
In order for this series to be convergent,
the limit as k approaches infinity must be less than 1.
In order for this series to have a limit less than 1, our numerator and denominator degree must be equal or the denominator must have the larger degree.
Why
If the numerator has a larger degree, our test would make this divergent, so the limit would be infinity
Since the denominator have 3 binomials, our power for the denominator will be 3, this the numerator having a degree of 3 or less as well.
So one of the answer is 3.
PLEASE HELP I DON'T UNDERSTAND THIS!!!!!
Answer:
C. (4, 0)
Step-by-step explanation:
(x, y)
a. (4, 3)
y = 12 - 3x
3 = 12 - 3(4)
3 = 12 - 12
3 = 0 false
b. (-4, 4)
y = 12 - 3x
4 = 12 - 3(-4)
4 = 12 + 12
4 = 24 false
c. (4, 0)
y = 12 - 3x
0 = 12 - 3(4)
0 = 12 - 12
0 = 0 true
d. (0, 4)
y = 12 - 3x
4 = 12 - 3(0)
4 = 12 - 0
4 = 12 false.
Answer: C (4, 0)
Step-by-step explanation:
your function y = 12 - 3x
They are asking which of those points are on the line
(x, y) this is a format of a point where you can plug in x for x and y for y.
a. (4, 3) x=4 y=3 substitute and see if your answer is true
3 = 12 -3(4)
3 = 0 this is not true so (4, 3) is not a solution
b. (-4,4) x= -4 y=4
4 = 12 - 3(-4)
4 = 24 not true
c. (4, 0) x=4 y=0
0 = 12-3(4)
0 = 0 true (4,0) is a solution
d. (0, 4)
4 = 12 - 3 (0)
4=12
A baker produces 400 brownies a day at a cost of 25 cents per brownie. If all the brownies are sold each day, what is the minimum selling price per brownie to make a daily profit of at least $420?
The minimum selling price per brownie to make a daily profit of at least $420 is $1.30.
What is the minimum selling price per brownie to make a daily profit of at least $420?Given that: A baker produces 400 brownies a day at a cost of 25 cents per brownie.
Let's begin by calculating the total cost of producing 400 brownies a day:
Cost per brownie = 25 cents = 0.25 dollars
Total cost = 400 × 0.25 = 100 dollars
To make a daily profit of at least $420, the total revenue should be:
Total revenue = Total cost + Minimum profit
Total revenue = 100 + 420 = 520 dollars
The minimum selling price per brownie to achieve this revenue can be calculated as:
Selling price per brownie = Total revenue / Number of brownies produced
Selling price per brownie = 520 / 400
Selling price per brownie = 1.3 dollars
Therefore, the minimum selling price is $1.30 per brownies.
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Number 1 please help
Answer:
x^2y^4
Step-by-step explanation:
b because u have to add the exponents of the like variable. x^4 and x^-2 are the like terms in this equations so 4+(-2) so its basically flipping the signs plus and the negative sign so it's just -2
NO LINKS!! URGENT HELP PLEASE!!!
Find the equation of a parabola with a vertex at (-2, 6) and that passes through the (-4, -5)
Answer:
[tex]\frac{-11}{4} (x + 2)^2 + 6.[/tex]
Step-by-step explanation:
As we know that
The standard equation of a parabola with vertex at point (h,k) is given by:
[tex]y = a(x-h)^2 + k[/tex]
where (h,k) is the vertex
and "a" is a coefficient that determines the direction and shape of the parabola.
We know that the vertex of our parabola is (-2, 6),
so we can substitute those values into the equation to get:
[tex]y = a(x + 2)^2 + 6[/tex]
Now finding a.
Since the parabola passes through point (-4, -5). Substituting these coordinates into the equation, we get:
-5 = a(-4 + 2)^2 + 6
-5 =a(-2)^2+6
-5=4a +6
-5-6=4a
4a=-11
a =- 11/4
Substituting the value of an equation second, we get
[tex]\frac{-11}{4} (x + 2)^2 + 6.[/tex]
Therefore, the equation of the parabola with a vertex at (-2, 6) and passing through (-4, -5) is y =
[tex] \frac{-11}{4} (x + 2)^2 + 6[/tex]
Answer:
[tex]y=-\dfrac{11}{4}(x+2)^2+6[/tex]
Step-by-step explanation:
The vertex form of a parabola is:
[tex]\boxed{y=a(x-h)^2+k}[/tex]
where:
(h, k) is the vertex."a" is the leading coefficient.Given the vertex is at (-2, 6), substitute h = -2 and k = 6 into the equation:
[tex]y=a(x-(-2))^2+6[/tex]
[tex]y=a(x+2)^2+6[/tex]
To find the value of a, substitute the point (-4, -5) into the equation and solve for a:
[tex]\begin{aligned}-5&=a(-4+2)^2+6\\-5&=a(-2)^2+6\\-5&=4a+6\\-5-6&=4a+6-6\\-11&=4a\\\dfrac{-11}{4}&=\dfrac{4a}{4}\\-\dfrac{11}{4}&=a\\a&=-\dfrac{11}{4}\end{aligned}[/tex]
Substitute the found value of a back into the equation:
[tex]y=-\dfrac{11}{4}(x+2)^2+6[/tex]
Therefore, the equation of a parabola with a vertex at (-2, 6) and that passes through the point (-4, -5) is:
[tex]\boxed{y=-\dfrac{11}{4}(x+2)^2+6}[/tex]
The functions fand g are defined as follows.
f(x)=2x²-3x g(x)=-4x-1
Find f(-4) and g (5).
f(-4) = ?
g (5) = ?
Answer:
f(- 4) = 44 , g(5) = - 21
Step-by-step explanation:
to evaluate f(- 4) substitute x = - 4 into f(x)
f(- 4) = 2(- 4)² - 3(- 4) = 2(16) + 12 = 32 + 12 = 44
to evaluate g(5) substitute x = 5 into g(x)
g(5) = - 4(5) - 1 = - 20 - 1 = - 21