Question 1025687
h(t) = −16t^2 + 30t + 3.5 
15=-16t^2+30t+3.5
16t^2-30t+11.5=0
t=(1/32)(30 +/- sqrt (900-736)); sqrt (164)=12.81)
t=(1/32)(30+/-12.81)
t=(1/32)(42.81) and (1/32)(17.19)
t=1.34 sec and t=0.537 sec
in order at 0.537 and 1.34 sec.
{{{graph(300,200,-2,4,-10,25,-16x^2+30x+3.5)}}}