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An archer shoots an arrow into the air s...

An archer shoots an arrow into the air such that its height at any time, t, given by the function `h(t)=-16t^(2)+kt+3`. If the maximum height of the arrow occurs at 4 seconds after it is launched, what is the value of k?

A

`128`

B

`64`

C

`8`

D

`4`

Text Solution

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The correct Answer is:
A
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