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10 February, 13:25

The fish population in a local stream is decreasing at a rate of 2.5% per year. The original population was 45,000. Write an exponential function to model this situation. Use y and x as your variables.

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  1. 10 February, 16:27
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    y=45000 (1-0.03) ^x

    Step-by-step explanation:

    1) the exponential decay formula is

    y=c (1-r) ^x

    where c = starting amount

    r=rate of change

    x=time

    so

    y=45000 (1-0.03) ^x

    y=45000-1350x
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