Assume that there are two identical firms, firm1 and firm2, serving a market in which consumer demands is given by the equation P = 100 - 20. The marginal costs of each firm are $10 per unit. (a) Derive the best response function for each firm (b) Calculate the Cournot equilibrium output for each firm (c) Solve for total industry output, and then find the market-clearing price (d) Calculate the profits of each firm