Answer:
B $3.00
Explanation:
We need to estimate a little. We are trying to find the slope. We need two points. The one point that is clear is (4,15) I would estimate the other points to be (0,3) The slope is the change in y over the change in x
the y values from the two points are 15 and 3. The x values are 4 and 0
=
= 3