Help me answer these questions please!

3) (7 points) A monopolist can produce its output at a constant average and constant marginal cost of: ATC = MC = 5 The monopoly faces a demand curve given by the following function: Q= 53-P And a marginal revenue curve that is given by the function: MR = 53 20 a) Draw the following: a. The rm's demand curve b. The rm's marginal revenue curve c. The rm's marginal cost curve b) What is the monopolist's prot maximizing price? c) What is the prot maximizing quantity for this monopolist? d) How much prot is the monopolist making? e) Suppose the market is no longer depicted by a monopoly, but has become perfectly competitive. What would the prot maximizing price and quantity be if the market were perfectly competitive