SOLUTION: This problem has had me stumped for 2 days now. Can I please get help? The U.S. population in 1990 was approximately 250 million, and the average growth rate for the past 30 yea

Question 88360: This problem has had me stumped for 2 days now. Can I please get help?
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 below formula for the United States then becomes:
P (in millions) = 250 * 2^( y-1990)/66
What will the population of the United States be in 2025 if this
growth rate continues?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
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 below formula for the United States then becomes:
:
P (in millions) = 250 * 2^( y-1990)/66
What will the population of the United States be in 2025 if this
growth rate continues?
:
P =
:
Using a calc find = 1.4442325
:
P = 250 * 1.4442325
:
P = 351.0581 (in millions)
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