At 1:00 the water level in a pool is 13 inches at 2:30 in the water level is 28 inches what is the rate of change

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At 1:00 the water level in a pool is 13 inches at 2:30 in the water level is 28 inches what is the rate of change

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    2021-11-15T17:31:21+00:00

    Let x = time, hours, from 1:00
    Let y = water level, inches

    Note that from 1:00 to 2:30, x = 2.5 – 1.0 = 1.5 hours.

    The given data is
    x:   0      1.5
    y:  13   28.0

    The change in x is 1.5 – 0 = 1.5 hours
    he change in y is 28 – 13 = 15 inches

    The rate of change is (15 inches)/(1.5 hours) = 10 inches/hour

    Answer: 10 inches per hour

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