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# At time t = 0, a projectile was fired upward from an initial

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At time t = 0, a projectile was fired upward from an initial [#permalink]  15 May 2019, 05:25
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At time t = 0, a projectile was fired upward from an initial height of 10 feet. Its height after t seconds is given by the function $$h(t) = p−10(q −t)^2$$ , where p and q are positive constants. If the projectile reached a maximum height of 100 feet when t = 3, then what was the height, in feet, of the projectile when t = 4 ?

(A) 62

(B) 70

(C) 85

(D) 89

(E) 90
[Reveal] Spoiler: OA

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At time t = 0, a projectile was fired upward from an initial   [#permalink] 15 May 2019, 05:25
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