SOLUTION: the us population in 1990 was approx. 250 million and the average growth rate for the past 30 years gives a doubling time of 66 years. The abouve formula for the united states be

Question 82918: the us population in 1990 was approx. 250 million and the average growth rate for the past 30 years gives a doubling time of 66 years. The abouve formula for the united states becomes
p(in millions)=250x2^(y-1990)/66
what will the population of the us be in 2025 if this growth rate continues?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
p(in millions)=250x2^(y-1990)/66
what will the population of the us be in 2025 if this growth rate continues?
----------------
p(in millions)=250x2^(2025-1990)/66
= 250*2^(35/66)
=250*(1.44423...)
=361.06 million
===============
Cheers,
Stan H.

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