7th Unit 2 Review

Combining Like Terms

100

Combine like terms:

3x - 5 + 7x - 3 

10x - 8

200

Combine like terms:

3a - 5b + 9b - 8

3a + 4b - 8

300

Combine like terms:

-4 + 8x - 9x + 2 - x

-2 - 2x

400

Combine like terms:

3y - 4x + 9x - 6x + 8y

11y + 1x

500

Combine like terms:

7 + 6y - 9 + 10 - 4y + 10y

8 + 12y

Distributive Property

100

Distribute:

4(5x - 9)

20x - 36

200

Distribute:

-2(5x + 8y)

-10x - 16y

300

Distribute:

-(5x - 9)

-5x + 9

400

Distribute:

3(5y + 8) + 5

15y + 29

500

Distribute:

3-6(2x + 8)

-12x - 45

Equivalent Expressions

100

Are the following equivalent:

x + x + x + x

and

2(2x)

yes = 4x

200

Are the following equivalent:

3(6y - 5)

18y - 10 - 5

yes = 18y - 15

300

Are the following equivalent:

-(5x - 7)

-4 +5x + 3

no

400

Are the following equivalent:

3x - x + 10 - 5x

2(x - 2x + 5)

no

500

Are the following equivalent:

3(2x + 6) + 10

2(14 + 3x)

yes = 6x + 28

Writing Expressions

100

Write the expression:

3 times a number raised to the 4th power

3x⁴

200

The sum of a number and 2, raised to the 3rd power

(x+2)³

300

The quotient of 10 and a number plus 6

10/x + 6

400

Double a number decreased by 5 squared

2x - 5²

500

6 more than 3 times a number minus 2 cubed

6 + 3x - 2³

Solving Expressions

100

Solve for when x = 3

5x + 7 - 2x

16

200

Solve for when x = 2

3 times a number plus 8

14

300

Solve for when x = 5

2(4x + 7)

54

400

Solve for when x = 2

The product of a number and 3 squared

18

500

Alice sells one loaf of bread for $3 and a certain amount of muffins for $2 each. 

Write an expression for any amount of muffins AND solve for her total after selling 7 muffins.  

3 + 2x

$17