the market for painting services is perfectly competitive

1.     Suppose that the market for painting services is perfectly competitive. Painting companies are identical; their long-run cost functions are given by.

a)     Find the long-run equilibrium quantity (q) and price (P) in this industry. Round answers to one decimal.                                                                                                                                                                                                                   3 points

b)     If market demand is , find the equilibrium total industry output (Q).                        1 point

c)     Assuming again that all painting companies are identical, find the equilibrium number of firms.          1 point