Answer
$17.7\ ft/sec$
Work Step by Step
Given $s=15.18\sqrt[9] n$, for $n=4$, we have $s=15.18\sqrt[9] 4\approx17.7\ ft/sec$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter R - Review of Basic Concepts - R.7 Radical Expressions - R.7 Exercises - Page 76: 111
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