WGU C957 APPLIED ALGEBRA OA EXAM
2026 EXAM QUESTIONS AND ANSWERS
WITH STUDY GUIDE |
VERIFIED GRADED A
A function doubles each input. What does the inverse function
do?
A. Doubles each input
B. Adds 2 to each input
C. Subtracts 2 from each input
D. Halves each input - ...ANSWER...D
Sales tax in your state is 7%.
Which function models the amount of sales tax, T, when you
spend x dollars?
A. T(x)=7+x
B. T(x)=0.07+x
C. T(x)=7x
D. T(x)=0.07(x) - ...ANSWER...D
Your daughter babysits and charges $8 per hour.
Select the function that models the amount of money she
earns when babysitting for h hours.
A. B(h)=8h
B. B(h)=h+8
,C. B(h)=8h
D. B(h)=8+h - ...ANSWER...C
Your business currently has 12 employees. You plan to add
three new employees each year for the life of your business.
Which function below models your plan? Note that N
represents the number of employees while y=0 corresponds to
the current year.
A. N(y)=12y+3
B. N(y)=36+y
C. N(y)=12+3y
D. N(y)=12-3y - ...ANSWER...C
The temperature outside is currently 50 degrees Fahrenheit
and decreasing at a rate of 2 degrees per hour.
Choose the function that models this scenario.
A. T(h)=50h-2
B. T(h)=50+2h
C. T(h)=50-2h
D. T(h)=50h+2 - ...ANSWER...C
The cost to mail a package that weighs z ounces is given by
the function C(z)=$2.50+0.08z.
How much would it cost to mail a package that weighs 14
ounces?
A. $13.24
B. $14.20
C. $2.58
D. $3.62 - ...ANSWER...D
,You currently earn $62,000 annually and will be given a pay
raise soon. If the pay raise is given as a percentage or rate, r,
the increase in pay, I, can be represented by the function
I(r)=62,000(r).
What is the increase in pay if you were given a 9% raise?
A. $3,580
B. $67,580
C. $558,000
D. $5,580 - ...ANSWER...D
You purchase a compact car for $22,000. The depreciation
value after t years is given by the function: V(t) = 22,000 -
1400t. Find the value of the car after three years.
A. $17,800
B. $20,600
C. $26,200
D. $61,800 - ...ANSWER...A
Given the function C(p)=20-p, which of these would be a
coordinate on the graph?
A. (5, 16)
B. (5, 18)
C. (5, 17)
D. (5, 15) - ...ANSWER...D
Suppose a short-distance towing company uses the function
P(m)=1.8m+32 to determine the price, P, of towing a car m
miles. What would the price be for the coordinate (10, P)?
, A. 33.8
B. 42
C. 18
D. 50 - ...ANSWER...
a horizontal, vertical, or slanted line that a graph approaches
but never touches - ...ANSWER...Asymptote
A statistic that measures how well a regression prediction
approximates the real data points. An r^2 of 1 indicates that
the regression prediction is a perfect fit for the data -
...ANSWER...coefficient of determination
Which choice is a variable?
A. The number of states in the United States of America
B. The cost of your daily newspaper
C. The amount a teenager makes babysitting
D. Your shoe size - ...ANSWER...C
Which choice is a variable?
A. The operating system on your phone
B. The amount a babysitter charges per hour
C. The name of the largest mountain range in the United States
D. The colors and styles of your shoes - ...ANSWER...D
Which choice is a quantitative variable?
2026 EXAM QUESTIONS AND ANSWERS
WITH STUDY GUIDE |
VERIFIED GRADED A
A function doubles each input. What does the inverse function
do?
A. Doubles each input
B. Adds 2 to each input
C. Subtracts 2 from each input
D. Halves each input - ...ANSWER...D
Sales tax in your state is 7%.
Which function models the amount of sales tax, T, when you
spend x dollars?
A. T(x)=7+x
B. T(x)=0.07+x
C. T(x)=7x
D. T(x)=0.07(x) - ...ANSWER...D
Your daughter babysits and charges $8 per hour.
Select the function that models the amount of money she
earns when babysitting for h hours.
A. B(h)=8h
B. B(h)=h+8
,C. B(h)=8h
D. B(h)=8+h - ...ANSWER...C
Your business currently has 12 employees. You plan to add
three new employees each year for the life of your business.
Which function below models your plan? Note that N
represents the number of employees while y=0 corresponds to
the current year.
A. N(y)=12y+3
B. N(y)=36+y
C. N(y)=12+3y
D. N(y)=12-3y - ...ANSWER...C
The temperature outside is currently 50 degrees Fahrenheit
and decreasing at a rate of 2 degrees per hour.
Choose the function that models this scenario.
A. T(h)=50h-2
B. T(h)=50+2h
C. T(h)=50-2h
D. T(h)=50h+2 - ...ANSWER...C
The cost to mail a package that weighs z ounces is given by
the function C(z)=$2.50+0.08z.
How much would it cost to mail a package that weighs 14
ounces?
A. $13.24
B. $14.20
C. $2.58
D. $3.62 - ...ANSWER...D
,You currently earn $62,000 annually and will be given a pay
raise soon. If the pay raise is given as a percentage or rate, r,
the increase in pay, I, can be represented by the function
I(r)=62,000(r).
What is the increase in pay if you were given a 9% raise?
A. $3,580
B. $67,580
C. $558,000
D. $5,580 - ...ANSWER...D
You purchase a compact car for $22,000. The depreciation
value after t years is given by the function: V(t) = 22,000 -
1400t. Find the value of the car after three years.
A. $17,800
B. $20,600
C. $26,200
D. $61,800 - ...ANSWER...A
Given the function C(p)=20-p, which of these would be a
coordinate on the graph?
A. (5, 16)
B. (5, 18)
C. (5, 17)
D. (5, 15) - ...ANSWER...D
Suppose a short-distance towing company uses the function
P(m)=1.8m+32 to determine the price, P, of towing a car m
miles. What would the price be for the coordinate (10, P)?
, A. 33.8
B. 42
C. 18
D. 50 - ...ANSWER...
a horizontal, vertical, or slanted line that a graph approaches
but never touches - ...ANSWER...Asymptote
A statistic that measures how well a regression prediction
approximates the real data points. An r^2 of 1 indicates that
the regression prediction is a perfect fit for the data -
...ANSWER...coefficient of determination
Which choice is a variable?
A. The number of states in the United States of America
B. The cost of your daily newspaper
C. The amount a teenager makes babysitting
D. Your shoe size - ...ANSWER...C
Which choice is a variable?
A. The operating system on your phone
B. The amount a babysitter charges per hour
C. The name of the largest mountain range in the United States
D. The colors and styles of your shoes - ...ANSWER...D
Which choice is a quantitative variable?
