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23 September, 14:25

If the number of bacteria in a colony doubled every 207 min and there is currently a population of 1,500 bacteria what will the population be 621 minutes from now

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  1. 23 September, 14:38
    0
    12,000 bacteria

    Step-by-step explanation:

    621/207 = 3

    therefor the bacteria will double 3 times

    1500 x 2 = 3000

    3000 x 2 = 6000

    6000 x 2 = 12000
  2. 23 September, 14:39
    0
    Answer: the population would be 11085 in 621 minutes from now

    Step-by-step explanation:

    We would apply the formula,

    y = ab^t

    Where

    a represents the initial amount of bacteria.

    t represents the doubling time

    From the information given

    a = 1500

    t = 207 minutes

    Since after 207 minutes, the amount of bacteria doubles, then

    y = 2 * 1500 = 3000

    Therefore

    3000 = 1500 * b^207

    Dividing through by 1500, it becomes

    2 = b^207

    Taking log of both sides of the equation, it becomes

    Log 2 = 207 log b

    0.301 = 207 log b

    Log b = 0.301/207 = 0.00145

    Taking inverse log of both sides of the equation, it becomes

    10^logb = 10^ 0.00145

    b = 1.00334

    The equation becomes

    y = 1500 (1.00334) ^t

    When t = 621 minutes, the population would be

    y = 1500 (1.00334) ^621

    y = 11085
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