Equivalent Expressions

Which is an equivalent expression to the following:

• x + 4

• x + 2

• 21x + 10

• 7(3x) + 2

• 14x + 7

• 21x + 14

• -3x - 18

• -3x + 6

• -3x + 18

• 3x + 18

• -6x - 8

• -6x + 8

• 6x - 8

• 6x + 8

Which expression represents how much Hannah charges?

• 12.25n

• 6.50 + 5.75n

• 6.50n + 5.75

• 6.50n + 5.50n

Select the expression that is equivalent to 48 + 12.

• 6(8+6)

• 12(4+1)

• 4(44 + 3)

• 8(6+4)

Simplify.

6(2x + 3y) + 3(x - y)

• 12x + 15y

• 15x + 15y

• 12x - 13y

• 9x

Write an expression that represents the perimeter of the triangle shown in the image.