## anonymous 5 years ago Situation: A hiker in africa discovers a skull that contains 43% of it's original c-14. k = .0001 find the age of the skull, round to the nearest year

1. anonymous

2. anonymous

3. anonymous

That's my bad, I did the work, but must not have posted. REALLY SORRY: $f(t) = Ae^{-kt}$ $f(t)/A = .43$ $e^{-kt} = .43; -kt = \ln(.43); t = \ln(.43)/-k$ t = 8439.7007 = 8440 years

4. anonymous

thank you