Answer
3
Work Step by Step
We are given that $f(x)=\sqrt (2x+3)$.
Therefore, $f(3)=\sqrt (2(3)+3)=\sqrt (6+3)=\sqrt 9=3$
We know this, because $3^{2}=3\times3=9$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Section 7.1 - Radicals and Radical Functions - Exercise Set - Page 417: 82
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