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The water level in a vat changed by −9.9 inches in 2.25 hours as the vat was drained. What is the average change in the vat's water level per hour? Enter the your answer in the box.

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nobillionaireNobley
The average change in the vat's water levels per hour is given by change in water levels divided by the number of hours.
Therefore, tha average change in the vat's water level's per hour = -9.9 / 2.25 = -4.4
Therefore, the average change in the vat's water level's per hour is -4.4 inches per hour.

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