Question 1090730
The population of a small village has grown at an annual rate of approximately 5.5%.
 How long will it take for its population of 3200 people to double at this growth rate?
:
let t = time for this to happen
1.055^t  = 2
Use logs
t*log(1.055) = log(2)
use your calc
t = {{{log(2)/log(1.055)}}}
t = 12.946 ~ 13 years