Quiz about Unit 4 Study Guide

Question 1

Which inequality represents this graph?

Accepted Answer

x > 0

Answer

x > 0

Answer

x < 0

Answer

x < 0

Question 2

Which inequality represents this graph?

Accepted Answer

x < -3

Answer

x < -3

Answer

x > -3

Answer

x > -3

Question 3

Each DVD costs $13.20 and you have $85. Which inequality represents the maximum number of DVDs you can buy?

Accepted Answer

13.20x < 85

Answer

13.20x > 85

Answer

x/13.20 < 85

Answer

x + 13.20 > 85

Question 4

Chris watches TV twice as much as Sam. If Chris watched for 38 hours, write an equation that can be used to find the number of hours Sam watched. S represents the hours Sam watched.

Accepted Answer

2s = 38

Answer

38s = 2

Answer

s/2 = 38

Answer

s + 2 = 38

Question 5

Chris watches TV twice as much as Sam. If Chris watched for 38 hours, how many hours did Sam watch?

2s = 38

Accepted Answer

19 hours

Answer

38 hours

Answer

18 hours

Answer

76 hours

Question 6

The minimum height a person must be to ride the water slide is 60 inches.

Write an inequality to show this.

Accepted Answer

x > 60

Answer

x < 60

Answer

x < 60

Answer

x > 60

Question 7

The minimum height a person must be to ride the water slide is 60 inches.

Which of the following people are allowed to ride the water slide?

Accepted Answer

Jack, 64 inches

Accepted Answer

Mary, 60 inches

Answer

Sarah, 52 inches

Answer

Greg, 59 inches

Question 8

Which of the following is NOT a solution to the inequality?

3y < 36

Accepted Answer

12

Answer

8

Answer

11

Answer

9

Question 9

Which equation and solution represent the sum of a number and eight is sixty-three?

Accepted Answer

n + 8 = 63 ; n = 55

Answer

n + 8 = 63 ; n = 71

Answer

n - 8 = 63 ; n = 71

Answer

8n = 63 ; n = 7.9

Question 10

Madison bought $18 more in food this week than she did last week. If she spent $39 this week, choose the equation that will determine the amount she spent last week.

Accepted Answer

x + 18 = 39

Answer

39 + x = 18

Answer

18x = 39

Answer

39x = 18

Question 11

John puts $20 worth of gas in his truck. The price per gallon was $2.50. Write an equation that can be used to find the number of gallons John purchased.

Accepted Answer

2.50g=20

Answer

2.50+g=20

Answer

20g=2.50

Answer

g/2.50=20

Question 12

Gage had $7 in his wallet. He bought a coke for $1.50 and he bought a magazine. When he left the store, he got $4.50 in change. Which equation was used to correctly find the cost of the magazine?

Accepted Answer

1.50 + 4.50 + m = 7

m=1

Answer

7 + 1.50 + 4.50 = m

m=13

Answer

4.50 + m + 1.50 = 7

m=2

Answer

m + 1.50 + 4.50 = 7

m=3

Question 13

Solve the following inequality.

1/2x < 15

Accepted Answer

x < 30

Answer

x < 30

Answer

x < 7.5

Answer

x > 7.5

Question 14

Solve for x.

x/20 > 5

Accepted Answer

x > 100

Answer

x < 4

Answer

x > 4

Answer

x < 100

Question 15

What is the solution to x - 13 = 24?

Accepted Answer

37

Answer

10

Answer

11

Answer

24

Question 16

Which equation has x = 8 as the solution?

Accepted Answer

4 + x = 12

Answer

2 + x = 7

Answer

5x=35

Answer

2x=18

Question 17

Solve: n + 7.8 = 15

Accepted Answer

n = 7.2

Answer

n = 7.8

Answer

n = 117

Answer

n = 22.8

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