Please see the attached image(s)/screenshot(s) for the question and all its sub-questions that also need to be answered. All pertinent background information that was provided to me is also included in the attached. Moreover, the general topic being covered is "Monopoly" and how monopolists choose the output that maximizes profit.

Question #4 When the changes in quantity are very small and its inverse demand is linear, P = a - bQ, the firm's marginal revenue is given by MR = a - 2bQ. a. What does MR equal if P = 100 -Q? What does MR equal if P = 20 -4Q? What does MR equal if P = 120 - 0.25Q? What does MR equal if P = 97 - Q?Firms maximize prot when the marginal revenue of the last unit produced equals the marginal cost of producing the good, and MC intersects MR from below. The shape of the marginal cost curve has little impact on the economic theory studied. As a result, we often assume that the rm's total costs equal $cQ, or marginal cost equals average cost, equals 0, and is constant. b. Find the prot-maximizing price and quantity when P = 25 Q and the rm's marginal cost is constant and equal to $5 per unit. How much prot does the rm earn? Calculate Consumer surplus as well. c. Find the prot-maximizing price and quantity when P = 60 5Q and the rm's marginal cost is constant and equal to $20 per unit. How much prot does the rm earn? Calculate Consumer surplus as well. d. Find the prot-maximizing price and quantity when P = 120 lOQ and the rm's marginal cost is constant and equal to $40 per unit. How much prot does the rm earn? Calculate Consumer surplus as well