Answer:
Explanation:
For Perimeter, just times both sides by 2 then add those together:
2(5x+2) + 2(3x+8) = 10x +4 +6x +16 = 16x + 20
If they want a solid #:
16x/16 = -20/16
x = -5/4
16(-5/4) + 20
-20 + 20 = 0
However, I think the first answer would the most likely
For Area, multipy the 2 sides using the box method, foil, etc.
I like using the box method (see image)
For the rest, its basically the same thing. The triangle is just adding the sides together
Hope this help! -w-