Answer
$B=5$
Work Step by Step
We plug in $-1$ to $x$ and $12$ to $f(x)$ and since $f(-1)=12$ we get: $f(-1)=3\cdot(-1)^2-B\cdot(-1)+4=12\\3+B+4=12\\7+B=12\\B=5$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 1 - Graphs - 2.1 Functions - 2.1 Assess Your Understanding - Page 58: 94
Update this answer!
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.
