The following geometric sequences represent the populations of two bacterial cultures at the 1-hour mark, the 2-hour mark, the 3-hour mark, and
so on. Culture A starts with more bacteria, but culture B has a ratio of
increase that is larger. Which culture will have the greater population at the
18-hour mark?
Culture A: 400, 600, 900, 1350,
Culture B: 5, 10, 20, 40,
C B. Culture B
O A. Culture A