Question

Will give medal
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, 1350, 2025, ...
Culture B: 10, 20, 40, 80, ...

Answer 1

Culture A will have 600 x 1.5^17
Culture B will have 10 x 2^17
Whichever total is larger is the winner!

Answer 2

You see that Culture A is increasing by a factor of 1.5 each time, right?
Since 900 / 600 is 1.5....1350 / 900 is 1.5 ... etx
And B is eaiser,. You can see that it just doubles every time

Answer 3

Cultur B is greater

Answer 4

yeah...that's what i get

Answer 5

Thanks