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4 January, 03:31

A countries population in 1992 was 39 million in 1997 it was 42 million estimate the population in 2009 is an exponential growth formula

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  1. 4 January, 05:28
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    First we need to find the growth rate

    The exponential growth formula is

    P=A e^rt

    P population in 1997=42 million

    A population in 1992=39 million

    E constant

    R growth rate?

    T time 5years (1997-1992)

    Solve the formula for R

    R = [log (p/A) : log (e) ]:t

    R = (log (42:39) : log (e)) : 5

    R=0.015

    Now estimate the population in 2009 using the same formula

    P=A e^rt

    P?

    A 42 million

    R 0.015

    T 12 years (2009-1997)

    E constant

    P=42*e^ (0.015*12)

    P=50.28 million round your answer to get 50 million
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