Pindyck & Rubinfeld, 8e. Ch 8 #7. Suppose the same rm's cost function is C(q) = 4q 2 + 16. (From #6, we also know that the market price is $20 and the industry is perfectly competitive.) (a) Find the variable cost, xed cost, average cost, average variable cost, and average xed cost. (b) Show the average cost, marginal cost, and average variable cost curves on a graph. (c) Find the output that minimizes average cost.

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