A hiker in Africa discovers a skull that contains 72% of it's original amount of c-14.
N=Noe^-kt
No=initial amount of C-14(at time t=0)
N=amount of C-14 at time t
t=time, in years
k=0.0001

Find the age of the skull to the nearest year

Question

A hiker in Africa discovers a skull that contains 72% of it's original amount of c-14. 
N=Noe^-kt
No=initial amount of C-14(at time t=0)
N=amount of C-14 at time t
t=time, in years
k=0.0001

Find the age of the skull to the nearest year

anonymous · Answer

help

irishboy123 · Answer

this is the key 

$\large N(t) =N_o \ e^{-kt}$

can you see how to rephrase this in terms of t?

anonymous · Answer

no im out of it plz show me

irishboy123 · Answer

" im out of"

lucky you, i wish

i can't do it for you, the forum rules police will shut me down

can you at least make an effort to show me some kind of understanding

up to you

irishboy123 · Answer

" 72% of it's original amount of c-14" tells you something about $N(t) / N_o$