#### Answer

$40 feet$

#### Work Step by Step

$h=4+60t-16t^{2}$
To find the height after 3 seconds, t=3.
$h=4+60\times3-16\times3^{2}$ feet
$h=4+180-16\times9$ feet
$h=184-144$ feet
$h=40$ feet

Published by
Pearson

ISBN 10:
0-13417-894-7

ISBN 13:
978-0-13417-894-3

$40 feet$

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