Easy.
C
Characterstofilluptherequiredammount
Y=-3x+36 because the line crosses the y axis at 36
The width would be x-4 and
Length would be x
Add all of the sides together
(x-4)+(x-4) + x + x =72,
Which would come out
4x-8=72
Subtract 8 fro, 72 and you get 64
Then divided 64 by 4
So. Width is 16 and length is 20 . given (x-4)
If you’re trying to find y the answer should be anything that equals more than negative 7 for example y could be 10