Please Help A missile is fired straight into the air from a military installation. The missile’s height (in feet) is given by the formula h(x) = -16x2 + 400x + 100.

***remember to put the units***

How high is the missile after 4.5 seconds?
At what time will the missile reach its maximum height?

What is the maximum height the missile will reach?
When will the missile be 2500 feet above the ground?
When will the missile reach its target (on the ground)?