Question

WILL GIVE BRAINLIEST, THANKS AND 5 STARS! PLEASE HELP! LOTS OF POINTS

Answer 1

First graph it

#1

Maximum height is the y coordinate of vertex

• (2,144)

Max height

• 144m

#2

Time is the x coordinate of vertex

• 2s

#3

• y is 0

$\\ \rm\Rrightarrow -16t^2+64t+80=0$

x intercepts are the solutions

• (-1,0)U(5,0)

Take it positive

• t=5s

#4

put in function

• y=-16(1)+64+80=-16+144=128ft