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9 September, 07:09

A bacteria culture starts with 150 bacteria and after 4 hours the population consists of 250 bacteria. what is the rate of the increase to the nearest percent?

a. 11%

b. 13%

c. 15%

d. 17%

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Answers (1)
  1. 9 September, 07:16
    0
    B is correct:

    A = Pe^ (rt)

    250=150e^ (4t)

    250/150=e^ (4t)

    In (250/150) = 4t

    t=In (250/150) / 4=.1277or. 13*100%=13%
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