Concept explainers
Revenue, cost, and profit. The total cost and the total revenue (in dollars) for the production and sale of x hair dryers are given, respectively, by
- (A) Find the value of x where the graph of R(x) has a horizontal tangent line.
- (B) Find the profit function P(x).
- (C) Find the value of x where the graph of P(x) has a horizontal tangent line.
- (D) Graph C(x), R(x), and P(x) on the same
coordinate system for 0 ≤ x ≤ 400. Find the break-even points. Find the x intercepts of the graph of P(x).
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