You are given the following functions in a fully competitive market:
Market demand function: Qd = 20 - 3P
Market supply function: Qs = 4 + P
Where P is price
A) In which price should a fully competitive firm sell its product?
B) Compute the average revenue and the marginal revenue of a fully competitive firm
C) Illustrate in diagrams both the curves of the average and the marginal revenue.