An artifact was found and tested for its carbon-14 content. If 84% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.)

Assuming it's age is n years,so

0.5^(n/5730)=1-84%=0.16

n/5730=log (0.5) 0.16=2.64

n=5730×2.64==15100 years

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