Question 1080958
The t value is -b/2a=-96/-32 or 3 seconds (b)
The height will be -144+288+256=400 feet
-16t^2+96t+256=0
divide by -16
t^2-6t-16=0
(t-8)(t+2)=0
t=8 seconds, only positive root.
{{{graph(300,300,-10,10,-30,500,-16x^2+96x+256)}}}