Question

Which is equivalent to the expression? 4(x + 5) + 4x + 8

A) 4(2x + 7)
B) 5x + 17
C) 8(x + 4)
D) 8x + 13

Answer 1

A) 4(2x + 7)

Explanation:

4(x + 5) = 4x +20

and 4x + 8 + 4x + 20 = 8x + 28

and them 8x +28 = 4(2x + 7)