The answer is -2. The line is going from left to right which makes it negative. Then if you look at the line and do change in y(rise) over change in x(run).
D move 2 times to the left
We can start by multiplying $19,200 by 12%. This is 2304. Subtract 19,200 from 2304 and you get 16,896. We could have also received this answer by multiplying by 88%. This would have given us 16,896. So we can use this equation: (((((19,200*88%)88%)88%)88%)88%)=$1011.08.
Hope this helped!
(12 2/3) divided by 8 = 19/12 or 1.58333333333333
