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Unit 4 · Contextual Applications of Differentiation

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AP Calculus AB · Topic 4.1: Interpreting the Meaning of the Derivative in ContextOpen topic

Original PrepAtlas question. This is not an official College Board question.

W(t) is the water volume in a tank, in liters, t minutes after observation begins. Which statement correctly interprets W′(6)=−12?

AAt t=6 min, the tank contains −12 L.BAt t=6 min, the volume is decreasing at an instantaneous rate of 12 L/min.CExactly 12 L leave the tank during every minute after t=6.DDuring the first 6 min, exactly 12 L leave the tank.

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Unit 4 · Contextual Applications of Differentiation

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