Asked by Lan Pas

In a laboratory, a certain culture of bacteria doubles every hour. If there are originally 20 bacteria in the culture, how many are present after 10 hours? 11 hours?

Answers

Answered by Reiny
amount = 20 (2)^t
plug in t = 10, then t = 11

or do it the long way:

now -- 20
after 1 hour -- 40
after 2 hours -- 80
....
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