SOLUTION: The population of a certain country grows exponentially so that its doubling time is 42 years. If the present population is 12.5 million, what will the population be in 126 years?

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Question 439896: The population of a certain country grows exponentially so that its doubling time is 42 years. If the present population is 12.5 million, what will the population be in 126 years?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
126/42=3
2^3=8
12.5 million x 8=100 million.
You can expect the population to be 100 million in 126 years.