Chapter 3 Review

Using Variables

100

Kayla earns $30 per hour. Write an expression to represent her total pay after a certain number of hours. 

30h

200

Malorie's hair is 27 inches long. It grows 2 inch every month. Write an equation to represent the length of her hair after a few months. 

27+2x

300

8 less than 4 times a number. 

4n-8

400

Kyle has 38 pieces of candy. He wants to keep 10 for himself and give some to his friends. Write an equation to represent how many pieces of candy each friend would receive. 

(38-10) / x

500

Joseph has $450. He owes each of his friends $30. Write an expression to represent how much money he would have after paying his debt. 

450-30x

Evaluating Expressions

100

ab+4b-a

For a=-3 and b=7

10

200

abc²+a-2b

For a=2, b=-9 and c=3

-142

300

x-(5x+2)-x

For x=-10

48

400

(3x²-7x) / -x

For x=-2

13

500

(2x³-7x)²

For x = 4

10,000

Combining Like Terms

100

5v+10-6v-10

-v

200

3ab - 2b + b² - 5ba + 11b - 2

-2ab + 9b + b² - 2

300

-0.5x - 12 + 2.6x - y² + 7.2 + y

2.1x - 4.8 - y² + y

400

1/3x + 5y - x - 5/6y

-2/3x + 4 1/6y

500

3 + 7.8x - 11.2x + 23x² - 6.2

23x² - 3.4x - 3.2

Distributive Poperty

100

-12(2x - 3)

-24x + 36

200

1/5(-30x + 5) + 7x

x + 1

300

5 - (2x - 7) + 6x

4x + 12

400

6 - (3x - 11) - 5(y + 2) + 4x

x + 7 - 5y

500

2.3 - 3(2x - 1.1) + 4x

-2x - 1

Mixed Review

100

Debbie has 30,000 followers on TikTok. She got cancelled and lost 24 followers an hour. Write an expression to represent her number of followers after a certain amount of time. 

30,000 - 24x

200

10x² + xy² - y 

For x = 4 and y = -2

178

300

Hannah's is for years older than half of Kaylas age. Write an expression to represent Hannah's age. 

1/2x + 4

400

Simplify: 3 - 1/2(x + 22) + 6x

5 1/2x - 8

500

(23 - 2x)² - x + 7

For x = 7

81