7. A rocket launched into the air reaches a height of 720 feet after 5 seconds. After 10 seconds, the rocket lands. Let the x-axis be the ground and the y-axis be at the starting point of the rocket.
a.
Write an equation modeling the path of the rocket, where h is the height of the rocket and t is the
time in seconds after the rocket is launched.
I
H(t)=
b.
What was the height of the rocket 7 seconds after it was launched?
C.
How many seconds is the rocket in the air?