Question

#15 how do i do it and how do i solve?!

Answer 1

The answer is 8x+30 !!!

Answer 2

perimeter=8x+30

Explanation:

(3x+15)+(3x+15)+(x)+(x)

^each side is represented within the parentheses

then, rearrange the terms so they are organized by like terms

3x+3x+x+x+15+15

8x+30