Answer
More than 500 radios must be sold to make a profit
Work Step by Step
At all points beyond x = 500 the R(x) graph is higher than the C(x) graph. If the revenue is greater than the cost than a profit is made.
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 5 - Systems of Equations and Inequalities - Exercise Set 5.1 - Page 528: 56
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