The count in a bacteria culture was 500 after 20 minutes and 1500 after 30 minutes. Assuming the count grows exponentially, What was the initial size of the culture? Find the doubling period. Find the...

The count in a bacteria culture was 500 after 20 minutes and 1500 after 30 minutes. Assuming the count grows exponentially,


What was the initial size of the culture?


Find the doubling period.


Find the population after 65 minutes.


When will the population reach 12000.