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February 1, 2015

February 1, 2015

Posted by **Millie** on Tuesday, February 12, 2013 at 12:44pm.

- Calculus -
**Steve**, Tuesday, February 12, 2013 at 3:58pmy = 640 + 128t - 16t^2

y' = 128 - 32t

y'=0 when t=4

so, what's y(4)?

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