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The population of a bacteria in a Petri dish doubles every 16 hours. The population of the bacteria is initially 500 organisms.

How long will it take for the population of the bacteria to reach 800?

Round your answer to the nearest tenth of an hour.



8.7 h

10.8 h

11.1 h

12.6 h <my choice

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3 answers
  1. 500*2^(t/16) = 800
    2*(t/16) = 1.6
    t/16 log2 = log 1.6
    t/16 = log1.6/log2 = 0.67807
    t = 10.849

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  2. 10.8 Trust me, just got my test results

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  3. In a lab experiment, 70 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 5 hours. How many bacteria would there be after 29 hours, to the nearest whole number?

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