Review: Expressions

Which of the sets of terms below does NOT include like terms?

• 9n, -9n, 7n

• 1q, -2q, 7q

• 30, -5, 15

• 6x, 5y, 4z

Which is the correct simplified version of the expression 12x + 7 - 24x?

• 36x + 7

• 74x

• -12x + 7

• -5x

Which of the following is an example of a set of like terms?

• 17x, x, 17

• 5y, -y, 3y

• 18, 21g, 4g

• -6x, -6y, -6xy

Which of the following is a true statement?

• -3(y + 8) is equivalent to -3y + 32.

• -2.5(4p - 16) is equivalent to -10p + 40.

• (1/2)(8 - 4g) is equivalent to 4 + 2g.

• All of the above are true.

Three students wrote expressions on their dry erase boards. AIDEN: -(6r - 3), FLORA: -2(3r - 1), LISA: 3(-2r + 1). Which of these students wrote equivalent expressions?

• Aiden and Lisa

• Flora and Lisa

• Aiden and Flora

• Aiden, Flora, and Lisa

7. Simplify: -5(3z - 5t + 2g)

• -15z -25t + 10g

• 15z + 25t - 10g

• -15z + 25t - 10g

• 15z - 25t + 10g

8. Simplify: 18r - 7(2r + 4)

• 18r - 14r - 28

• 4r - 28

• 4r +28

• -4r + 4

Simplify an expression for the AREA of the rectangle shown.

• 32x - 8

• 16x + 4

• 16x - 4

• 32x + 8

Brooke purchased a new pair of tennis shoes that cost x dollars. Her brother, Benji, purchased a new pair of shoes that cost 20% more than Brooke’s. Which expression could be used to represent the cost of Benji’s shoes?

• x + 0.2x

• 1.2x

• Both A and B

• Neither A nor B

Which of the following expressions represents the PERIMETER of this figure?

• 5x-10

• 10x-20

• 5x-6

• 10x-12