A particular strain of bacteria triples in population every 45 minutes.

Assuming you start with 50 bacteria in a petri dish, how many bacteria will

there be in 4.5 hours?

Answer - there are 6 45 minute segments in 4.5 hours. Therefore, you would need to triple the population six times.

50x3=150

150x3=450

450x3=1350

1350x3=4050

4050x3=12150

12150x3=36450

Therefore, if the population triples every 45 minutes from 50 for 4.5 hours, you would end up with 36,450 bacteria