Answer
$(-\infty,5]$ or $\{x|x\le5 \}$
Work Step by Step
The domain requirement of the function is $10-2x\ge0 \longrightarrow x\le5$, thus we have $(-\infty,5]$ or $\{x|x\le5 \}$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 2 - Linear and Quadratic Functions - Section 2.5 Inequalities Involving Quadratic Functions - 2.5 Assess Your Understanding - Page 164: 42
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