Answer
54.22 mph
Work Step by Step
$S(x)=\sqrt {10.5x}$
$S(280)=\sqrt {10.5*280}$
$S(280)=\sqrt {2940}$
$S(280)=54.22$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 10 - Section 10.6 - Radical Equations and Problem Solving - Exercise Set - Page 731: 64
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