Consider the following cost function. a. Find the average cost and marginal cost functions. b. Determine the average and marginal cost when x = a. c. Interpret the values obtained in part (b). C(x)=0.04x³ +0.2x² + 50x+130, 0≤x≤ 1500, a = 500 a. The average cost function is C(x) =

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