Question

Stephen is playing with a toy parachute. He drops the toy parachute from the rooftop of a building. The expression below represents the vertical height from the ground, in feet, of the toy parachute x seconds after being dropped from the rooftop.

-16x^2+16x+80

Which statement best describes the term 80?

A.
the initial height from where the toy parachute is dropped
B.
the maximum height of the toy parachute
C.
the time it takes the toy parachute to land
D.
the speed of the toy parachute

Answer 1

A

Explanation:

-16x²+16x+80=y

y is height from ground

if we take x=1 (initial time)

so

-16(1)²+16(1)+80=y

-16+16+80

y=80

so answer is A (initial height )