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The cost function for q units of a certain item is C(q) = 104q +93. The revenue function for the same item is R(q) = 1049+ 49q a. Find the marginal cost. b. Find the profit function. c. Find the profit from one more unit sold when 8 units are sold. a. The marginal cost is b. P (q) = c. The profit from one more unit when 8 units are sold is approximately $ (Type an integer or decimal rounded to two decimal places as needed.)