Answer
$B=5$
Work Step by Step
We are given:
$f(x)=3x^{2}-Bx+4$ and $f(-1)=12$
We solve for $B$:
$f(-1)=3(-1)^{2}-B(-1)+4$
$f(-1)=3+B+4$
$f(-1)=7+B$
$12=7+B$
$B=5$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 3 - Section 3.1 - Functions - 3.1 Assess Your Understanding - Page 212: 94
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