Having diffuiculty understanding this concept. Any help would be appreciated

Your college newspaper, The Collegiate Investigator, sells for 90 per copy. The cost of producing x copies of an edition is given by C(x) = so + 0.10x + 0.001)(2 dollars. (a) Calculate the marginal revenue R'(x) and prot P'(x) functions. HINT [See Example 2.] R'(x) = P'(X) = (b) Compute the revenue and profit, and also the marginal revenue and prot, if you have produced and sold 500 copies of the latest edition. revenue $ prot $ marginal revenue $ per additional copy marginal prot :5 per additional copy Interpret the results. The approximate x from the sale of the 5015t copy is $ (c) For which value ofx is the marginal prot zero? X= copies Interpret your answer. The graph of the profit function is a parabola with a vertex at x = , so the prot is at a maximum when you produce and sell copies