Amy runs a bike rental business. She currently charges $36 per bike rental and averages 60 rentals a week for an average weekly income of $2,160. She predicts that she may lose 2 rentals a week for every one-dollar increase in the rental price, p. Amy writes the expression – 2p2 – 12p + 2160 to model her prediction. Complete the equivalent expression below to reveal the maximum income based upon Amy's model.