SOLUTION: How long will it take for the population of a certain country to double if its annual growth rate is 3.5% (round to the nearest year). Use the exponential growth model P(t) = P su

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Question 282911: How long will it take for the population of a certain country to double if its annual growth rate is 3.5% (round to the nearest year). Use the exponential growth model P(t) = P subscript 0 e^kt.
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!

In one year, P will grow to 1.035*P0.
Use this to find k.



Now to find the time to double, let P=2*P0.




That's the exact answer.
Approximately,

About 20 years and 2 months.

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