A person standing close to the edge on top of a 84 foot building throws a ball vertically upward. The quadratic function h(t) =
- 16t ^ 2 + 100t + 84 models the ball's height about the ground, h(t) , 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
