Question

A type of bacterium triples in population every hour. Assuming you start with 120 bacteria, the formula that models the number of bacteria at the beginning of hour n is: a(n) = 120 • 3n – 1 How many bacteria will there be at the beginning of hour 5?

Answer 1

9720 bacteria before Hour 5 begins.

Explanation:

What is n by the way?

Hour 0: 120

Hour 1: 360

Hour 2: 1080

Hour 3: 3240

Hour 4: 9720