We know from the slope intercept form that y=mx+b so the y intercept is 12 while every hour the cost goes up by 8
The answer to your question is A.
answer: 3.6
Answer:

Step-by-step explanation:
The perimeter is two times width plus two times length:

There is no way to simplify further.
Add 8 to both sides
3x=33
Divide both sides by 3
x=11