Answer
$5$ GB.
Work Step by Step
Step 1. Let $x$ be the number of GB needed. For Data Plan A, we have $cost1=52+18x$, and for Data Plan B, we have $cost2=32+22x$.
Step 2. Letting $cost~1=cost~2$, we have $52+18x=32+22x$, $4x=20$ and $x=5$ GB.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Review Exercises - Page 144: 143
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