The y-intercept appears to be at y=-1. The line appears to also go through grid point (3, 1), which is 2 units up and 3 units over. The slope is 2/3.
In slope-intercept form the equation of the line is
y = (2/3)x - 1
So you would add 12 to the other side of the equation, and 9+12=21, so x=21.
It will be C. Oranges, $0.50 each; Bananas $0.10 each.
Answer:
it rained 6 1/4 or 6.25 inches in two days