Question

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 greatest population at the 18-hour mark?

Culture A:600, 900, 1,350, 2,025, ...
Culture B:10, 20, 40, 80, ...

Answer 1

geometric sequence with r>1 should grow faster
but here u should check by actually calculating the 18th term for A and B

Answer 2

huh

Answer 3

for A after 18hr mark its 5700
for A after 18hr mark its 1310720

Answer 4

so B