Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 4 - Polynomials - 4.3 Polynomials - 4.3 Exercise Set - Page 253: 85



Work Step by Step

We first simplify the equation using the fact that revenue minus cost equals profit: $$250x-0.5x^2-4000-0.6x^2 \\ -1.1x^2+250x-4000$$ Thus, we find that the profit for 30 monitors is: $$-1.1\cdot \:30^2+250\cdot \:30-4000\\ 2510$$
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