College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 3 - Section 3.1 - Functions - 3.1 Assess Your Understanding: 94

Answer

$B=5$

Work Step by Step

We are given: $f(x)=3x^{2}-Bx+4$ and $f(-1)=12$ We solve for $B$: $f(-1)=3(-1)^{2}-B(-1)+4$ $f(-1)=3+B+4$ $f(-1)=7+B$ $12=7+B$ $B=5$
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