February 24, 2017

Homework Help: math

Posted by gagan on Friday, January 23, 2009 at 9:21am.

A water balloon is shot into the air so that its height h, in metres, after t seconds is
h = —4.9t^2 + 27t + 2.4

a)How high is the balloon after 1 s?
b)For how long is the balloon more than 30 m high?
c)What is the maximum height reached by the balloon?
d)When will the balloon hit the ground?

Can you please help me thanks and need this urgently plz plz plz plz and thanks a lot for doing this.

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