Name:    Chapter 7 Post Test

Multiple Choice
Identify the choice that best completes the statement or answers the question.

1.

Find the domain of the rational function.

 a. b. c. d. e.

2.

The average cost for a manufacturer to produce x units of a product is given by . Describe the domain.
 a. all b. all c. all d. all integers e. all

3.

Multiply and simplify.

 a. b. c. d. e.

4.

Multiply and simplify.

 a. b. c. d. e.

5.

Multiply and simplify.

 a. b. c. d. e.

6.

Combine and simplify.

 a. b. c. d. e.

7.

Simplify the complex fraction.

 a. b. c. d. e.

8.

Simplify the complex fraction.

 a. b. c. d. e.

9.

Simplify the complex fraction.

 a. b. c. d. e.

10.

Simplify the complex fraction.

 a. b. c. d. e.

11.

Simplify the expression.

 a. b. c. d. e.

12.

Use the function to find and simplify the expression for .
 a. b. c. d. e.

13.

Solve the equation. Check for extraneous solutions.

 a. b. c. d. e.

14.

Solve the equation. Check for extraneous solutions.

 a. b. c. d. e. no solution

15.

Solve the equation. Check for extraneous solutions.

 a. b. c. d. e.

16.

Write an equation that relates the variables.

s is directly proportional to the of t
 a. b. c. d. e.

17.

Find the constant of proportionality given , and when .
 a. b. c. d. e.

18.

Complete the table given below for .

 a. b. c. d. e.

19.

Complete the table given below for .

 a. b. c. d. e.

20.

You and your college roommate travel to your respective hometowns in the same amount of time. You drive miles and your friend drives miles. Your friend’s average speed is 6 miles per hour lower than your average speed. What is your average speed?
 a. miles per hour b. miles per hour c. miles per hour d. miles per hour e. miles per hour