P = 200 - 0.4Q if0 50 Calculate the marginal revenue (MR) function facing Chillman and plot it on the graph using the green points (triangle symbols). (Hint: Start with (0,200) and end at (70, 0). Use all four points.) Chillman's total cost function is as follows: TC = 500 + 40Q + 0.5Q2 Using the orange line (square symbols), plot the marginal cost curve on the graph. Chillman maximizes profit by selling units at a price of $ per unit