HELP!!
A bird drops a stick to the ground from a height of 80 ft. The function h=-16t^2+80 gives the stick's approximate height h above the ground, in feet, after t seconds. Graph the function. At about what time does the stick hit the ground?

Question

HELP!!
A bird drops a stick to the ground from a height of 80 ft. The function h=-16t^2+80 gives the stick's approximate height h above the ground, in feet, after t seconds. Graph the function. At about what time does the stick hit the ground?

directrix · Answer

h(x) = -16t^2 + 80

 Stick touches the ground when h = 0.

directrix · Answer

Solve for t.  After that, we'll draw the graph.

 -16t^2 + 80 = 0


@Liv33

liv33 · Answer

ok 1 min

directrix · Answer

-16t^2 + 80 = 0

-16t^2 = - 80

Then, what comes next?