Answer
See below
Work Step by Step
Let $h$ be a downward opening parabola
The maximum height is given by: $t=-\frac{b}{2a}=-\frac{30}{2(-16)}=\frac{15}{16}=0.9375$ seconds.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 4 Quadratic Functions and Factoring - Standardized Test Practice - Extended Response - Page 327: 22b
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