Question

Suppose that the amount of algae in a pond doubles every 4 hours. If the pond initially contains 50 pounds of algae, how much algae will be in the pond after 12 hours?

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Answer 1

So it starts with 50lbs of algae And it doubles every 4 hours. 12 hours is it doubling three times so 50 doubled is 100 the 100 doubled is 200 and after 12 hours 200 doubled would be 400lbs algae.

Answer: 400lbs

Answer 2

400

Explanation:

12 divided by 4 equals 3 periods where the amount of algae doubles. so from 0-4 hours the algae doubles to 100 , at 4-8 the algae doubles to 200, and then doubles to 400