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 formula for this is P (in millions)

Algebra ->  Polynomials-and-rational-expressions -> 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 formula for this is P (in millions)      Log On


   

Question 40532: 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 formula for this is

P (in millions) = 250 x 2^[(y-1990)/66]
What will the population of the US be in 2025 if this growth continues.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
P (in millions) = 250 x 2^[(y-1990)/66]
What will the population of the US be in 2025 if this growth continues.
P(in millions)= (250)2^[(2025-1990)/66]
=(250)2^[35/66]
=361.06
Cheers,
Stan H.