It is domain {6, -6, -12, -1, 5} range {6, -9, - 2, 7, 5}
X = 0 and x =5. you can know this because the zeros of a function are wherever the line crosses the x axis
In total if she read A, B, and C she would of got 17 points.
The answer is B. $1600 because you have to subtract it