Profit The figure depicts the average monthly profit for Best Used Car Sales for the...

Profit The figure depicts the average monthly profit for Best Used Car Sales for the previous year.

a. Estimate the rates of change at = 5, x = 20, x = 40, x = 60, x = 80, and 100 cars.

b. What are the approximate input values of the three inflection points of p.

c. Sketch a rate-of-change graph for p. Label both axes.