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 $3^{2}=3\times3=9$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.