the following function gives the height, h metres, of a fired rocket as a function of time, t seconds, since the rocket was fired.

h = − t2 + t +4.91

a) What was the maximum height reached by the rocket? At what time did this occur?




b) What was the initial height of the rocket?



c) Determine the maximum height of the rocket



d) Determine the height of the rocket after 2 seconds