7.EE.1 & 7.EE.2 Review

Which expression is equivalent to 3.2(6.5 – 2x)?

• 2x – 20.8

• 2x + 4.3

• • -6.4x + 20.8

• 6.4x + 4.3

Which expression is equivalent to 4(x + 3y) – 2(2y + 5x)?

• 6x + 2y

• -6x + 8y

• 8xy

• 12xy

Which expression is equivalent to 15x + 8y – 4 + 5x – 20y + 26?

• 2(10x + 14y – 15)

• 2(10x – 6y + 11)

• 5(4x + 2y – 6)

• 5(4x – 2y + 5)

Which expression is equivalent to 7x + 5 – (7x – 12)?

• 14x – 7

• 14x + 17

• 7x + 7

• 17

Find the value of x that will make the following two expressions equivalent: -12.3 + x and -2.5(6 - 4) + 3.9

• 0.5

• -6.4

• 7.8

• 11.2

Which expression is equivalent to: (6x − 3y) − (20x − 18)

• 2(14x − y − 9)

• 16x − y − 18

• 2(14x + y + 9)

• -16x-3y+18

Which of the following expressions are equivalent to 4x+8? Select three that apply:

• 2(2x+4)

• 4(x+2)

• 2(4x+2)

• 8x+16

• 2x+8

At a store, all laptops are on sale for 40% off. If x represents the regular price of a laptop, which expression could be used to calculate the sale price?

• x−40x − 40

• x−60x − 60

• 0.4x0.4x

• 0.6x0.6x

The expression 12x−8 represents the length of a rectangle. The expression −6x+10 represents its width. Which expression represents the perimeter of the rectangle (Hint: Perimeter=2l+2w--> 2(12x-8) + 2(-6x+10))?

• 6x+2

• 12x

• 12x+4

• 28x

At a store, shirts are on sale for 40% off. Sales tax is 8%. Which expression will calculate the total cost of a shirt with an original price of x?

• x(0.48)

• x(0.68)

• x(0.60)(1.08)

• x(0.60)(0.08)