Question #aab78

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1 Answer
Dr. S
Jan 14, 2018

#6.4*10^6# bacteria

Explanation:

At #time = 0#, there are #10^5# bacteria.

Every 20 minutes, that number doubles

#t = 0 rarr# [bacteria] = #10^5#
#t = 20 rarr# [bacteria] = #2*10^5#
#t = 40 rarr# [bacteria] = #4*10^5#
#t = 60 rarr# [bacteria] = #8*10^5#
#t = 80 rarr# [bacteria] = #16*10^5#
#t = 100 rarr# [bacteria] = #32*10^5#
#t = 120 rarr# [bacteria] = #64*10^5 = 6.4*10^6#

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