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 as a decimal.

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ksndjs

Answer:4.4

Step-by-step explanation:

I did 9.9 divided by 2.25 for the answer. (This means we get per hour so...)