A person standing close to the edge on the top of a 248-foot building throws a baseball vertically upward. The quadratic equation

h = -16 t^2 + 128 t + 248

models the ball's height \, h \, above the ground in feet, t seconds after it was thrown.

Question

A person standing close to the edge on the top of a 248-foot building throws a baseball vertically upward. The quadratic equation

h = -16 t^2 + 128 t + 248

models the ball's height \, h \, above the ground in feet, t seconds after it was thrown.

aum · Answer

What is the question?

anonymous · Answer

how high is the ball after 4 seconds and how many seconds does it take until the ball finally hits the ground? Round to the nearest tenth of a second.