A young boy shoots a rocket off of a table and the height of the rocket in meters is given by h(t) = -0.2t^2 +10t + 3 where t is in seconds.  How long does it take for the rocket to hit the ground?  And at what time is the rocket at its highest point? What is that height?

Q: The rocket splashes down after how seconds. h(t)=−4.9t^+40t+87

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