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NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=-4.9t2+43t+115.

Assuming that the rocket will splash down into the ocean, at what time does splashdown occur?

The rocket splashes down after   seconds.

How high above sea-level does the rocket get at its peak?

The rocket peaks at   meters above sea-level.

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