A person standing close to the edge on top of a 60-foot building throws a ball vertically upward. The quadratic function h(t)=−16t2+ 68t +60 models the ball's height about the ground h(t), in feet, t seconds after it was thrown. a) What is the maximum height of the ball? .                      feet  b) How many seconds does it take until the ball hits the ground?                          seconds

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter9: Quadratic Equations And Functions
Section9.6: Graph Quadratic Functions Using Properties
Problem 9.103TI: Solve, rounding answers to the nearest tenth. The quadratic function h(x)=16t2+128t+32 is used to...
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A person standing close to the edge on top of a 60-foot building throws a ball vertically upward. The quadratic function h(t)=−16t2+ 68t +60 models the ball's height about the ground h(t), in feet, t seconds after it was thrown.

a) What is the maximum height of the ball?

.                      feet 

b) How many seconds does it take until the ball hits the ground?

                         seconds

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