The answer is A because from where it touches -1 it goes down 3 or -3 which is m(the slope) and b(y intercept) is -3.
Hope this helped!!
Your answer is going to be $9.60
You ignore the 0's for now and think of 3 x 8 instead
3 x 8 = 24
with the answer of 24, you would now attach the two 0's
2400
2400 is your answer