Answer
$(15254.24,16071.43)$
Work Step by Step
We know that $\frac{1}{1.18}\cdot18000=15254.24$ and $\frac{1}{1.12}\cdot18000=16071.43$, thus the cost is $(15254.24,16071.43)$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 1 - Section 1.5 - Solving Inequalities - 1.5 Assess Your Understanding - Page 129: 115
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