Please refer to the following question:

The market demand for haircut is Q0 = 300 10p and the supply is 03 = 30p, where p is the price of a haircut service and Qis the market output (Q = nor. with n barber shops producing or haircuts each]. A typical competitive barber shop in this market has the cost function as C = 81: + q2f2. At the equilibrium price, how many barber shops would compete in the short run? What is the lowest price at which each barber shop would operate in the long run? [That is. what is the shut-down price of a barber shop?)