# Math

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Suppose that the amount of algae is a pond doubles every 3 hours. If the pond initially contains 70 pounds of algae, how much algae will be in the pond after 9 hours?

Is the answer 560? I was not sure how to set it up, but doubled it every 3 hours. If this is not correct, please show me how to solve.

• Math -

population p = 70*2^(n/3) after n hours

70 * 2^3 = 70*8 = 560

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