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h(t)=-4.9t^(2)+68.6t The function abov...

`h(t)=-4.9t^(2)+68.6t`
The function above gives the height of a model rocket, in meters, t seconds after it is launched from ground level. What is the maximum height, to the nearest meter, attained by the model rocket?

A

`90`

B

`120`

C

`180`

D

`240`

Text Solution

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The correct Answer is:
D
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