For Questions 9 to 11: Given the equations: P = 510 – 3Q TC = 300 + 30Q + 0.2Q2 Where P = price Q = quantity TC = total cost 9. Marginal revenue (MR) is computed as A. MR = 210 – 3Q B. MR = 210 – 6Q 10. Marginal cost (MC) is computed as A. MC = 30 + 0.2Q B. MC = 330 + 0.4Q C. decrease D. increase C.MR=510–3Q D.MR=510–6Q C.MC=30+0.4Q D.MC=330+0.2Q 11. The maximum profit, given these two equations, is A. 21,375 C. 13,675 B. 17,700 D. 16,200