Answer
$B=6$
Work Step by Step
We plug in $x=5$ to $f(x)$ to get $f(5)=\frac{2\cdot5+B}{5-3}=8\\\frac{10+B}{2}=8\\10+B=2\cdot8\\B=16-10=6$
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.