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23 December, 02:46

A countrys population in 1992 was 72 million in 1998 it was 76 million estimate the population in 2012 using the exponential growth formula?

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  1. 23 December, 03:04
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    Hi there

    First find the rate of growth between

    1992 and 1998

    The formula is

    P=Ae^rt

    P the population in 1998. (76 million)

    A the population in 1992 (72 million)

    E constant

    R rate of growth?

    T time 1,998-1,992=6 years

    We need to solve for r

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

    R = (log (76:72) : log (e)) : 6

    R=0.009

    Now find the population in 2012

    P=Ae^rt

    P?

    A 72 million

    R 0.009

    T 2,012-1,992=20 years

    So

    P=72*e^ (0.009*20)

    P=86.2 round your answer to get

    P=86 million

    Good luck!
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