<PRE><B>Question 70041</B>
the average growth rate for the past 30 years gives a doubling time of 66 years. The above formula for the United States then becomes
P (in millions) = 250 x 2^(y-1990/66)
:
What will the population of the United States be in 2025 if this growth rate continues?
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P = 250 x 2^[(2025-1990)/66]
P = 250 x 2^[35/66]
P = 250 x 1.44423...
P = 361.06 million people
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Cheers,
Stan H.</PRE>