Algebra 1: Unit 2 Review

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• 4x - 3 = 21

• 4x - 12 = 21

• 3x - 9 = 28

• 7x - 21 = 12

In City Lake, researchers caught, marked, and released 176 bass. Later, they took a sample of 91 bass and found that 13 were marked. Estimate the number of bass in the lake.

• 1183 bass

• 2288 bass

• 254 bass

• 1232 bass

Mathematical Equivalence

ON

What is 75% of 40?

• 10

• 20

• 30

• 50

1170 is 130% of what number?

• 351

• 900

• 1521

• 3900

What percent of 160 is 168?

• 5%

• 8%

• 105%

• 108%

There are 32 marbles in the box. There are 12 red marbles, 14 blue marbles, and 6 yellow marbles. What percent of the marbles are NOT blue?

• 18.75%

• 56.25%

• 62.5%

What is the percent of change from 5,000 to 800?

• 84% increase

• 75% increase

• 75% decrease

• 84% decrease

What is the percent of change from 25 to 34?

• 34% increase

• 36% decrease

• 34% decrease

• 36% increase