exponential growth

Question

The population of a certain bacteria triples every five years. Begin with 600 bacteria, how many bacteria would there be after 22 years. (round to whole number)

Answer 1

t = years elapsed from when the population was 600

The law of exponential growth for this problem is

p(t) = 600 (3)^t/5

Plug in t=22 and evaluate to get p(22).