Can someone please help me? Thank you

a) From what height was the quarter tossed?
For t=0
d= -16t^2+96t+112- ------>112 feet
the answer is 112 feet
b) How long does it take the quarter to reach its maximum height?
The maximum of the graphic is at point (3,256)--- > view the graphic attached
t=3 seg
d=256 feet
The answer is 3 seg
c) What is the maximum height of the quarter?
The maximum of the graphic is at point (3,256)--- > view the graphic attached
The maximum of the quarter is (256-112)=144 feet
The answer is 144 feet
d) How much time does it take for the quarter to hit he water?
For d=0------------- > view the graphic attached
t=7 seg
The answer is 7 seg