Arocket was launched into the air from a platform above ground. the height, in feet, of the rocket above the ground t seconds after being thrown can be determined by the expression -16t^2 + 64t + 80. what does the 80 in the expression represent

80 is the height of the platform

the rocket didnt launch from the ground so u need to add it in

The rocket was launched from a platform 80 feet above the ground.

Step-by-step explanation:

The + 80 is where it starts

i believe the answer is the polygon, heptagon.