Answer
$3$
Work Step by Step
Substitute $x=-1$ into $f(x)$ to get: $f(-1)=\sqrt{3(-1)+12}=\sqrt9=3$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 6 - Section 6.8 - Modeling Using Variation - Exercise Set - Page 491: 63
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