The height of a leaf above the ground after it falls from a tree is given by the formula s(t)=3.8t^2+47.3, where time is given in seconds and height is given in feet. When would the leaf land on the top of the person's head if the person was seated on the ground and their head was 2.7 feet above the ground?
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1 answer

just solve
3.8t^2+47.3 = 2.7
in the usual way 👍
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answered by oobleck
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