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Algebra
Question

A person standing close to the edge on top of a \(...

A person standing close to the edge on top of a \( 80 \) -foot building throws a ball vertically upward. The quadratic function \( h = - 16 t ^ { 2 } + 64 t + 80 \) models the ball's height above the ground, \( h \) , in feet, 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

Answer

144 feet

2 s 

Solution
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