The bones of a mammal were discovered to have 3% as much Carbon-14 as they would have contained when the mammal was alive. How long ago did the animal live? (Use k = 0.00012)

The bones of a mammal were discovered to have 3% as much Carbon-14 as they would have contained when the mammal was alive. How long ago did the animal live? (Use k = 0.00012)

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