Answer:
$56
Step-by-step explanation:
In a slope intercept equation in the form of y=mb+b,
m is the slope. m is the coefficient of x, meaning it is the number x is multiplied by. In this case, m happens to be
-5
which is your answer
12x40=480
You can first multiply 12x4=48 and then you could put a zero next to the 8
