Quiz about Chapter 8 Review

Question 1

Solve the proportion:

Accepted Answer

15

Answer

5

Answer

10

Answer

12

Question 2

Solve the proportion:

Accepted Answer

4

Answer

21

Answer

24

Answer

3

Question 3

Solve for a

Accepted Answer

107/12

Answer

29/12

Answer

41/12

Answer

13

Question 4

A grading machine can grade 48 multiple-choice tests in 1 minute. How long will it take the machine to grade 300 tests?

Accepted Answer

6.25 Min

Answer

0.16 Tests

Answer

6.25 Tests

Answer

0.16 Min

Question 5

A 6-ounce package of fruit snacks contains 45 pieces. How many pieces would you expect in a 10-ounce package?

Accepted Answer

75 Pieces

Answer

27-ounces

Answer

27 pieces

Answer

75-ounces

Question 6

The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 people are in line?

Accepted Answer

32 Min.

Answer

32 People

Answer

12.5 Min.

Answer

12.5 People

Question 7

Suppose y varies directly as x.
If y = 22.5 when x = 15, find y when x = 20.

Accepted Answer

30

Answer

1.5

Answer

337.5

Answer

16.875

Question 8

Suppose y varies jointly as x & z.
If y = -180 when z = 15
and x = -3,
then find y when x = 7 and z = -5.

Accepted Answer

-140

Answer

140

Answer

-4

Answer

4

Question 9

Suppose y varies inversely with x.
If y = 150 when x = 2, find y when x = 25.

Accepted Answer

12

Answer

300

Answer

75

Answer

1,875

Question 10

Solve for x

Accepted Answer

x = 26

Answer

x = 16

Answer

x = 28

Answer

x = 1/26

Question 11

Solve for x

Accepted Answer

1/2

Answer

25/8

Answer

11

Answer

53/4

Question 12

Solve the equation for x:

Accepted Answer

x = -1/4

Answer

x = 1/3

Answer

x = -3/4

Answer

x = 3/4

Question 13

Hamburger sells for 3 pounds for $6. If Alicia buys 10 pounds of hamburger, how much will she pay?

Accepted Answer

$20

Answer

$30

Answer

$60

Answer

$10

Question 14

The distance that an automobile travels varies directly as the time it travels. If the car travels 280 miles in 7 hours, how far will it travel in 12 hours?

Accepted Answer

480

Answer

1960

Answer

84

Answer

25

Question 15

Solve for k

Accepted Answer

165

Answer

17

Answer

1/17

Answer

1/165

Question 16

The width of a rectangle varies inversely with its length.  If the width is 6 when the length is 24, give an equation that shows the relationship.

Accepted Answer

y = 144/x

Answer

y = 4x

Answer

y = 144x

Answer

y = 4/x

Question 17

y varies inversely as x, if y = -3 when x = -6, find y when x = 14.

Accepted Answer

9/7

Answer

11

Answer

-11

Answer

7/9

Question 18

y varies directly as x, if y=4 when x=3, find x when y=-12

Accepted Answer

-9

Answer

-16

Answer

16

Answer

9

Question 19

The variable x is in joint variation with y and z. When the values of y and z are 4 and 6, x is 16. What is the value of x when y = 8 and z =12?

Accepted Answer

64

Answer

32

Answer

48

Answer

96

Question 20

A is in joint variation with B and square of C. When A = 144, B = 4 and C = 3. Then what is the value of A when B = 6 and C = 4?

Accepted Answer

384

Answer

124

Answer

368

Answer

486

Chapter 8 Review

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics