Answer:
hi the right answer is option C.112
here's why:

Answer:
Step-by-step exA wall is 1200 sq ft.
A gallon of paint covers 200 sq ft.
Complete the conversion factor: 1 gallon / ? sq ftplanation:
9 - 6x = 45
-9 -9
_____________
-6x = 54
x = -9
________________________
So when you plug that answer into x-4 you get -9 -4, which equals -13.