Problem 11 of 34fun-011
A patch of duckweed on a pond covers square feet. The area it covers doubles every days. How many square feet will the patch cover days from now?
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Solution walkthrough1:38
- Doubling means multiplying by . The patch starts at square feet and is multiplied by every days.
- Count the doublings. Each one takes days, so days holds doublings.
- Double four times: .
- Four doublings multiply by , and .
- Traps: , and all multiply once instead of doubling times.