Question

When 4(0.5x + 2.5y - 0.7x -1.3y + 4) is simplified, what is the resulting expression?

A: -0.8x + 4.8y + 16
B: 0.8x - 4.8y + 16
C: -0.8x - 4.8y + 4
D: 0.8x + 4.8y + 4

Answer 1

The answer would be A. Even without solving the entire thing you can the first part will be negative when you combine like terms. The second part (aka y) would be positive after the terms are combined. 16 comes from 4 multiplied by 4 after distribution.

Answer 2

-0.8x+4.8y+16

Explanation:

`4(0.5x+2.5y-0.7x-1.3y+4)\\4(-0.2x+1.2y+4)\\4(-0.2x)+4(1.2y)+4(4)\\-0.8x+4.8y+16`