Unit 2 Review

Inequalities

100

Solve:

7x + 3 < 2x - 7

x < -2

200

Solve: 

-3(x - 4) < 2(3x - 1)

x > 14/9

300

Solve:

120 < 20x - 40 ≤ 160

8 < x ≤ 10

400

Solve the compound inequality.

-3x - 2 ≥ -8 OR 3x + 4 > 13

x ≤ 2 OR x > 3

500

Solve:

4x - 1/2 ≤ -2 + x/3 

x ≤ -9/22

Absolute Value

100

Solve: 

|x| = 5

x = -5, 5

200

Solve: 

|2x - 5| = 3

x = 1, 4

300

Solve: 

|3x| + 2 = 20

x = -6, 6

400

Solve: 

|2x - 3| ≤ 5

-1 ≤ x ≤ 4

500

Solve:

|3x + 4| - 5 > 0

x < -3 OR x > 1/3

Grab Bag

100

Solve:

2r - 3 ≤ 2(r - 4)

No Solution!

200

131.84 is what percent of 64?

206%

300

Solve:

2|3x| + 4 = -2

No solution!

400

A video game that originally costs $60 is on sale for 15% off.  What is the cost of the video game now? (Round to the nearest cent)

$51

Discount: 15% of 60 is 9

60 - 9 = 51

500

Solve:

|h/7 + 22| > 20

h < -294 OR h > -14

Proportions

100

Solve:

6/(5n) = 2/5

n = 3

200

Solve:

10/(p + 2) = 4/3

p = 11/2

300

m/8 = (m + 7)/9

m = 56

400

9/4 = (r - 10)/r

r = -8

500

Noah bought two heads of cabbage for $1.80.  How many heads of cabbage can Jackson buy if he has $28.80?

32 heads of cabbage

Percents

100

What is 23% of 140?

32.2

200

8.4 is what percent of 48?

17.5%

300

77 is 22% of what number?

350

400

120% of 118 is what number?

141.6

500

A concert hall has 400 seats.  Currently, 325 are occupied.  What percent of the seats are occupied?

81.25%