Question

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

Answer 1

... already answered Please stop spamming :D

Answer 2

no it's not already answered

Answer 3

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

Answer 4

thank you