Answer
30 mph
Yes, because the calculated velocity of 30 mph does not exceed the 35 mph speed limit.
Work Step by Step
$v=\sqrt {20L}$
Substitute the given length for L and solve for v.
$v=\sqrt {20\times45}$
Simplify.
$v=\sqrt{900}$
$v=30$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 8 - Section 8.1 - Finding Roots - Exercise Set - Page 576: 88
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