This is from Biology:
Bacteria reproduce asexually (split in 2) at a rate of 20 minutes. How many DECENDANTS do you have at 20 minutes? 40 minutes? 60 minutes? Two hours? Three hours? 24 hours?
Also the formula to figure this out would be extremely helpful! Thank you!
You don't need a formula, you just need to think about what "splits in two" means. If one splits in to two in 20 minutes, then starting with one, you have two in 20 minutes. In another 20 minutes each of those will split into two. How many will there be then? In another 20 minutes, each of those will split into two. How many will that make?
Having just read emakarov's response, I am assuming that you mean "at a rate of one split every 20 minutes", that you are starting with one, and that none die.