The height s of a ball in feet thrwn with an initial velocity of 80 feet er second from an initial height of 6 feet is givenas a function of the time t in seconds by

s(t)=16t^2+80t+6

(a) Graph

(b)Determine the time at which the height is maximum

(c)What is the maximum height?

Would I put this equation into my TI-86 and interpret the graph? Or am I totally wrong?