A species of finch has been introduced to the big island of Hawaii and the population is
growing exponentially. Genetic analysis suggests that all the finches on the island were
derived from a single pair of birds. You observe that one year, there are 500 finches. The
next year, there are 600 finches. Assuming the per capita instantaneous growth rate has been
constant, how many years ago were finches introduced to the island?
Calculate how many years
(answer is 31.7 , how do you get there ?)