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Mathematics, 22.10.2020 01:01 AnxiousKid

4. A toy rocket is fired into the air from the top of a barn. It's height (h) above the ground in yards after t seconds is given by the function: h(t) =- 5t^2+ 10t+ 20.
a) What was the maximum height of the rocket?
b) How long was the rocket in the air before it reached its highest height?

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4. A toy rocket is fired into the air from the top of a barn. It's height (h) above the ground in y...
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