SOLUTION: A fossilized leaf contains 12% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the half-life of carbon 14. a. 1031 b.

Question 1034021: A fossilized leaf contains 12% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the half-life of carbon 14.
a. 1031
b. 17,099
c. 20,040
d. 36,108

Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
We use

Here
so we find t...

and, taking the log we get

so that
t = 17130 years
The best choice is B.
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