Answer
$[1,\infty)$.
Work Step by Step
The domain requirements of $f(x)$ are $x+3\ge0\ and\ x-1\ge0$ which gives $x\ge1$ or $[1,\infty)$.
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 4 - Exponential and Logarithmic Functions - Section 4.6 Logarithmic and Exponential Equations - 4.6 Assess Your Understanding - Page 339: 113
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