A football is kicked from ground level with an initial velocity of 72 feet per second. The height above the ground is modeled by the function h(t)=-16t^2+72t, where t is the time in seconds since the football was kicked. How many seconds will it take the football to reach a height of 80 feet as it travels upward?

if you explain the the question more correctly i might be able to answer this better

step-by-step explanation:

idk wbu

step-by-step explanation:

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya