The doubling period of a bacterial population is 10 minutes. At time t=80 minutes, the bacterial population was 80000.
What was the initial population at time t=0 ?
Find the size of the bacterial population after 5 hours.

The city of Annville is currently home to 26000 people, and the population has been growing at a continuous rate of 6 % per year. The city of Brinker is currently home to 19000 people, and the population has been growing at a continuous rate of 8 % per year. In how many years will the populations of the two towns be equal?
-15.69 x years
Give your answer accurate to at least 2 decimal places.