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25 May, 04:14

A colony of bacterial doubled every week. If the colony began with 40 bacteria, how many bacteria are present after 4 weeks?

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  1. 25 May, 04:35
    0
    640 bacteria.

    Step-by-step explanation:

    Make a chart.

    Bacteria Weeks

    40 0

    80 1

    160 2

    320 3

    640 4

    It starts off with 40 bacteria, which means no weeks have passed so far. That is why 40 pairs with 0 rather than 1.
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