Solve a through d please

1. A bicycle courier has a fixed delivery cost of $ 12.50 per day, plus a variable cost of $0.25/package. He earns $ 4.25 per package he delivers, in revenue. The maximum number of packages that he can deliver in a day is 27. a) Write an equation to represent .The total cost, C, as a function of the number, p, of packages delivered. . The revenue, R, as a function of the number, p, of packages delivered, b) Identify the break-even point. (Revenue = Cost) N c) Profit, P. is the difference between revenue and cost, Write an equation for the profit function. MHE 4UI d) What is the maximum daily profit the courier can earn