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September 19, 2014

September 19, 2014

Posted by **Patty T.** on Saturday, June 12, 2010 at 4:52pm.

How long will it take for the population of a certain country to double if its annual growth rate is 1.5%? Round to the nearest year. Use the exponential growth model P(t) = P0e^kt.

- Algebra -
**Reiny**, Saturday, June 12, 2010 at 5:40pmsolve

2 = 1(e)^.015t

ln 2 = ln e^.015t

.015t = ln2

t = .693147/.015

= 46.2

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