An apple is launched directly upward at 64 feet per second from a platform 80 feet high. The equation for this apple's height h at time t seconds after launch
is h(t) = -16t? + 64t + 80. How many seconds until the apple is 100 feet high?

0.34

Step-by-step explanation:

you can type this into the calculator too and by going to your table settings you can adjust where it"ll reach 100 or do 100=-16t^2+64t+80 and solve

sorry I am not good at quick maths so I cant do it in my head

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.