A student In Greece discovers a pottery bowl the contains 28% of its 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
k=0.0001
t= time in years

Find the age of the pottery bowl to the nearest year

Question

A student In Greece discovers a pottery bowl the contains 28% of its 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
k=0.0001
t= time in years

Find the age of the pottery bowl to the nearest year

BigMac · Answer

Solve the equation with parameter $N = 0.28N_0$. So solve equation
$$  0.28N_0 = N_0 e^{-0.0001t} $$
or you can divide both sides by $N_0$:
$$0.28 = e^{-0.0001t}$$
Easy to solve without getting a heart attack.