Function h(t)=-5+20t+60
Simplofy the function
[tex]\begin{gathered} h(t)=-5+20t+60 \\ h(t)=20t+55 \end{gathered}[/tex]The object will ba at maximum height before launched, i.e at t=0
substitute t=0 and solve for h(t)
[tex]\begin{gathered} h(t)=20t+55 \\ h(0)=20(0)+55 \\ h=55 \end{gathered}[/tex]The maximum height is 55 unit.
