Given the cost and demand function, Compute price, quantity and deadweight loss.
Dana's Doorsteps (DD) is a monopolist in the doorstep company. Its cost is C= 10Q and demand is P = 30- Q.
1. Illustrate what price should DD set to maximize profits?
2. Illustrate what would output be if DD acted like a perfect competitor and set P=MC?
3. Illustrate what is the deadweight loss of the monopoly?