Question 1178859
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Hi
 the maximum height attained by the ball (in ft)
s(t) = 128 + 80t − 16t^ 2:
vertex:  t  = -b/(2a)
t = 80/32
t = 2.5sec
Using FREE graph software  https://www.padowan.dk/download/ 
s(2.5sec) = 228ft
Wish You the Best in your Studies.
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