Hi, I need help with problem #3, all parts. I don't even know where to begin.

3. The demand function for a competitive market is Q = 8000 200P. In the short run, there are two types of firm in the industry. There are 1200 "type 1" firms with cost functions of ct(q) = 8 + 2q2, and 600 "type 2" firms with costs of ca(q) = 8 4q * 3q2. In each cost function, The "8" is an avoidable fixed cost (i.e. a cost that must be paid if q > O, but not if q = O). In parts a-d you can assume that all firms want to produce a positive quantity. Your answers will have fractions/decimals in them. b. d. e. g. Determine the supply function (i.e. supply curve) for an individual firm of each type. Determine the market short-run supply curve. Determine the short-run competitive equilibrium price. Determine the quantity produced by each firm. Determine the profit for each firm. What is the long-run competitive equilibrium price and quantity? How many firms of each type are present in the long-run competitive equilibrium?