Answer
$(-\infty,5]$
Work Step by Step
The domain requirement for this function is that the expression under the radical should be positive; we have $5-x\geq0$. Thus $x\leq5$ or $(-\infty,5]$
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 6 - Cumulative Review Exercises - Page 801: 12
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