A rocket is launch from the ground and the path of the rocket is modeled by the equation h = -4t2 - 80t where h represents the height of the rocket (in feet) after t seconds. Using the graph, answer each question.

1.

How long does it take for the rocket to reach the ground? Be sure to include your units.

2.

How did you determine your answer for #1?

3.

What is the maximum height the rocket will reach?

4.

How did you determine the maximum height in #3? Be specific.

5.

How many seconds will it take for the rocket to reach its maximum height?

6.

How did you determine how long it would take for the rocket to reach its maximum height in #5? Be specific.