Y = 0.012x + 57,000
12% translates to 0.012. That number is in front of the x because it changes yearly.
The 57,000 is added afterwards (b) because it was there from the beginning
If x = 8, then the factor is (x - 8); likewise, if x = -5, then the factor is (x + 5). FOIL those together and get B
This is not the answer, but I want to tell you that I can't see what the problem says. I would help you, but I can't.
First you subtract 47 from both sides (-47 from 47 and -47 from 32)
Then you get -3x = -15
Divide -3 from -3x and -3 from -15
Leaving you with X = 5
Can you buttress your point?