Applied Algebra C957 WGU -
Learning Checks EXAM 1 NEWEST
VERSION COMPLETE EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS
(100% GUARANTEED PASS) || A+
GRADED
Which of these represents a function?
A. Input: A student's age; Output: The number of siblings a student has
B. Input: The cost of an item; Output: The sales tax owed on the item
C. Input: A teacher's gender; Output: Subject he or she teaches
D. Input: The amount of coffee consumed; Output: Level of intelligence -
ANSWER ✓ B
A company uses the function B to predict the cost of benefits given the number of
employees, n.
What might the inverse function be useful for?
A. The inverse function could be used to figure out how many employees the
company could employ if the budget for benefits was limited.
B. The inverse function could be used to predict the cost of benefits for new hires.
- ANSWER ✓ 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?
Learning Checks EXAM 1 NEWEST
VERSION COMPLETE EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS
(100% GUARANTEED PASS) || A+
GRADED
Which of these represents a function?
A. Input: A student's age; Output: The number of siblings a student has
B. Input: The cost of an item; Output: The sales tax owed on the item
C. Input: A teacher's gender; Output: Subject he or she teaches
D. Input: The amount of coffee consumed; Output: Level of intelligence -
ANSWER ✓ B
A company uses the function B to predict the cost of benefits given the number of
employees, n.
What might the inverse function be useful for?
A. The inverse function could be used to figure out how many employees the
company could employ if the budget for benefits was limited.
B. The inverse function could be used to predict the cost of benefits for new hires.
- ANSWER ✓ 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?
