Chapter 2 Sections 5-10 Test

1.

1 point

2-10 Percent Change

In 1990, the price of a gallon of unleaded gasoline was $1.37. In 1998, it was $1.02 per gallon. What is the decrease expressed as a percent change?

134

25.5

34.3

74.5

2.

1 point

2-10 Percent Change

In 2008, the price of a gallon of unleaded gasoline was $4.02. In 1990, it was only $1.37 per gallon. What is the increase expressed as a percent change?

66%

393%

193%

134%

3.

1 point

2-10 Percent Change

A student’s scale recorded his weight as 160 lb. His weight is actually 164 lb. What is the percent error of the scale?

0.04%

2.4%

2.5%

0.4%

4.

1 point

2-9 Percents

What percent of 80 is 52?

153%

65%

0.65%

1.53%

5.

1 point

2-9 Percents

Tickets that cost $88 for a professional women’s championship soccer game are offered at a 15% discount. What is the sale price?

$70.40

$74.80

$13.20

$86.70

6.

1 point

2-9 Percents

125% of what number is 12.5?

15.6

100

1000

10

7.

1 point

2-8 Proportions and Similar Figures

Using the image provided, solve for x.

4

7.5

5

3

8.

1 point

2-8 Proportions and Similar Figures

A 10 ft tall flagpole stands next to a tree. The shadow of the flagpole is 17 ft and the shadow of the tree is 50 ft. What is the height of the tree?

3.4 ft.

50 ft.

85 ft.

29.4 ft.

9.

1 point

2-7 Solving Proportions

What is the solution of the proportion 2/3 = x/14?

21

2

7

9.3

10.

1 point

2-7 Solving Proportions

What is the solution to the proportion 3/5 = 13/x?

7.8

21.7

1.2

2.6

11.

1 point

2-7 Solving Proportions

A concession stand at a baseball game sells 3 apples for $2.00. How can you find the cost for 10 apples? Choose the proportion that is written correctly.

3/2 = x/10

2/3 = 10/x

3/2 = 10/x

3/x = 2/10

12.

1 point

2-6 Ratios, Rates, and Conversions

Your friend is selling 5 tickets to the next ice hockey game for $80. You can buy 3 tickets online for $50. Which source offers the best price? Explain.

Your friend; he sells tickets for $16.67 each, while the online price is $16.

Your friend; he sells tickets for $16 each, while the online price is $16.67.

Online; he sells tickets for $16 each, while the online price is $16.67.

Online; he sells tickets for $16.67 each, while the online price is $16.

13.

1 point

2-6 Ratios, Rates, and Conversions

What is 3.2 m converted to centimeters? (1 m = 100 cm)

3.2 cm

32 cm

320 cm

0.032 cm

14.

1 point

2-6 Ratios, Rates, and Conversions

A Queensland toad travels 10 m/day. How far will it travel in 5 hours? (1 day = 24 hours)

0.42 m

2.08 m

240 m

48 m

15.

1 point

2-5 Literal Equations and Formulas

Solve the equation 6x + 3y = 15 for y. What does y equal if x = 2? If x = 5?

y = 5 - 2x; y = -1; y = 5

y = 5 - 6x; y = -7; y = -25

y = 5 + 2x; y = 19; y = 15

y = 15 - 2x; y = 11; y = 5

16.

1 point

2-5 Literal Equations and Formulas

What is the height of a triangle with area 40 square inches and base 20 inches? (A = 0.5bh)

2 in.

1 in.

4 in.

3 in.