SOLUTION: Solve. The U.S population in 1990 was approximately 250 million, and the average growth rate for the past 30 years gives a doubling time of 66 years. The above formula for the U

Algebra ->  Graphs -> SOLUTION: Solve. The U.S population in 1990 was approximately 250 million, and the average growth rate for the past 30 years gives a doubling time of 66 years. The above formula for the U      Log On


   

Question 113133: Solve.
The U.S population in 1990 was approximately 250 million, and 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 to the power of (y-1990)/66
What will the population of the United States be in 2025 if this growth rate continues?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
(p(in millions) = 250 X 2 to the power of (y-1990)/66
What will the population of the United States be in 2025 if this growth rate continues?
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P(2025) = 250*2^[(2025-1990)/66] in millions
P(2025) = 250*2^[0.530303...] in millions
P(2025) = 250*1.444232517.. in millions
P(2025) = 361.058129... in millions
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Cheers,
Stan H.