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19 February, 01:22

In the year 2019, Lee County used approximately 55 million gallons of water. Historical trends show that each year the water demand is increasing at a rate of approximately 2.1%. If this trend continues, approximately how many million gallons of water of water will be used by Lee County in the year 2025? Round to the nearest million.

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  1. 19 February, 03:09
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    To the nearest million, this is 62,000,000 gallons

    Step-by-step explanation:

    Here, we are to calculate the amount of water expected to be used by Lee County in the year 2025.

    To calculate this amount, we set up an exponential function as follows;

    A = I (1+r) ^t

    where A is the amount expected in the year 2025

    I is the initial amount of water used which is 55 million

    r is the percentage change per year which is 2.1% or simply 2.1/100 = 0.021

    T is the difference in the years between 2025 and 2019 = 2025-2019 = 6 years

    Plugging these values into the equation, we have

    A = 55,000,000 (1 + 0.021) ^6

    A = 55,000,000 (1.021) ^6

    A = 62,304,173.899295434

    To the nearest million, this is 62,000,000 gallons
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