Mathematics, 01.03.2021 02:20, StrangerMo

Pls help me :( A model rocket is launched from a platform and its height h metres is given as a function of
the elapsed time t seconds by 2 htt =− + + 4 9 180 2 . . Using a graphing calculator determine:
a) the maximum height of the rocket
b) the time required for the rocket to reach its maximum height
c) the time required for the rocket to reach the ground

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Pls help me :( A model rocket is launched from a platform and its height h metres is given as a fun...