The total cost and the total revenue (in dollars) for the production and sale of x hair

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The total cost and the total revenue (in dollars) for the production and sale of x hair dryers are given, respectively, by
C(x) = 5x + 2,340 and R(x) = 40x - O.lx2
0 ≤ x ≤ 400
(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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College Mathematics for Business Economics Life Sciences and Social Sciences

ISBN: 978-0321614001

12th edition

Authors: Raymond A. Barnett, Michael R. Ziegler, Karl E. Byleen

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