The height h​ (in feet) of a fireworks shell shot vertically upward as a function of time t​ (in s) is h(t)=-16t^2+144t+4 . How long should the fuse last so that the shell explodes at the top of its​ trajectory?

Step-by-step explanation:

h(t)=16t²+144t +4

=16(t²+9t+(9/2)²)-16(9/2)²+4

check your problem statement.

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0