A school typically sells 500 yearbooks each year for $50 each. the economics class does a project and discovers that they can sell 125 more yearbooks for every $5 decrease in price.the revenue for the school sales is R(x)=(500+125x)(50-5x)

- To maximize profit, what price should the school charge for the yearbooks?
- What is the possible maximum revenue?
- If the school attains the maximum revenue, how many yearbooks will they sell?