Choose the one alternative that best completes the statement or answers the question.

Determine whether the sequence is geometric. If so, find the value of r.

-2, -6, 18, -54, . . .

A) geometric; r = -8

B) geometric; r = 2

C) not geometric

D) geometric; r = -3

## Classify the following random variable according to whether it is discrete or continuous. -the heights of the bookcases in a school library

Classify the following random variable according to whether it is discrete or continuous.

-the heights of the bookcases in a school library

A) continuous

B) discrete

## As the skill level (and therefore earnings rate) of, say, an architect, computer specialist, or chemist increases, what happens to his or her opportunity cost of doing other things How

As the skill level (and therefore earnings rate) of, say, an architect, computer specialist, or chemist increases, what happens to his or her opportunity cost of doing other things How is the time spent on leisure likely to change

## MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Determine whether the statement is true or false. -If a function f has an inverse function and

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Determine whether the statement is true or false.

-If a function f has an inverse function and the domain of f is all real numbers, then the domain of

f-1 must also be all real numbers.

## Choose the one alternative that best completes the statement or answers the question. -The diagonal of the floor of a rectangular office cubicle is 2 ft longer than the length of

Choose the one alternative that best completes the statement or answers the question.

-The diagonal of the floor of a rectangular office cubicle is 2 ft longer than the length of the cubicle and 5 ft longer than twice the width. Find the dimensions of the cubicle. Round to the nearest tenth, if necessary.

A) width = 3.9 ft, length = 9.7 ft

B) width = 9.7 ft, length = 22.4 ft

C) width = 2 ft, length = 9 ft

D) width = 4 ft, length = 11 ft

## Choose the one alternative that best completes the statement or answers the question. -A bicycle wheel rotates 500 times in a minute as long as the rider is pedalling. If the

Choose the one alternative that best completes the statement or answers the question.

-A bicycle wheel rotates 500 times in a minute as long as the rider is pedalling. If the rider stops pedalling, the wheel starts to slow down. Each minute it will rotate only 4/5 as many times as in the preceding minute. How

Many times will the wheel rotate in the 4th minute after the rider’s feet leave the pedals? Round your answer to

The nearest unit.

A) 0 times

B) 158 times

C) 211 times

D) 8 times

## Choose the one alternative that best completes the statement or answers the question. -Two 6-sided dice are rolled. What is the probability the sum of the two numbers on the dice

Choose the one alternative that best completes the statement or answers the question.

-Two 6-sided dice are rolled. What is the probability the sum of the two numbers on the dice will be 3?