2. [1/3 Points] DETAILS PREVIOUS ANSWERS 9/30 Submissions Used The cost, in thousands of dollars, of airing x television commercials during a sports event is given by C(x) = 150 + 2,900x -0.03x2. (a) Find the marginal cost function C'(x). C'(x) = -0.06x + 2900 (b) Use the marginal cost to approximate the cost to air the 5th commercial. Convert your answer to dollars. The cost to air the 5th commercial is approximately $2899.76 X dollars. (c) What is the exact cost to air the 5th commercial? Convert your answer to dollars. The exact cost to air the 5th commercial is X dollars