9. Suppose we have a competitive industry with many firms, all of which have the cost function c(y) = y2 + 1 when y > 0 and c(0) = 0. Suppose that. initially, aggregate demand is D(p) = 84-p. Note that the number of firms has to be an interger amount, but that prices and quantities do not have to be intergers. (a) Solve for an individual firm's supply curve? If there are n firms in the market, what is the market supply curve? (b) In the long-run, what is the minimum price at which this product will be supplied? (c) What is the equilibrium number of firms in the market? (d) What is the equilibrium price? What is the output of every firm in the market