Posted by Patty T. on Saturday, June 12, 2010 at 4:52pm.
Solve.
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 5:40pm
solve
2 = 1(e)^.015t
ln 2 = ln e^.015t
.015t = ln2
t = .693147/.015
= 46.2