Suppose that there are currently about 81 gray wolves in Oregon. If the gray wolf population increases at an annual rate of 1.2 percent, estimate the number of years it will take for the population to reach 1,256 gray wolves.
Pf=Pn x 1.012^N
1,256=81 x 1.012^N divide both sides by 81
15.506=1.012^N take the Log of both sides
N=Log(15.506) / Log(1.012)
N=~230 years approx.