88.9166666667.................
Answer:
its A I promise! good luck!
a)
h(t) , namely "h" variable is being represented in terms of "t".
h = dependent variable, depends on the value of "t", output.
t = independent variable, takes on values freely, input.
b)

c)

after 2 seconds, the ball is 11 meters high up.
=3y+18y-12=2y-2-7
=21y-12=2y-9
=21y-2y=-9+12
=19y=3
Y=0,16