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5 November, 06:10

A type of bacterium triples in population every hour. Assuming you start with 120 bacteria, the formula that models the number of bacteria at the beginning of hour n is: a (n) = 120 • 3n - 1 How many bacteria will there be at the beginning of hour 5?

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  1. 5 November, 06:11
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    9720 bacteria before Hour 5 begins.

    Step-by-step explanation:

    What is n by the way?

    Hour 0: 120

    Hour 1: 360

    Hour 2: 1080

    Hour 3: 3240

    Hour 4: 9720
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