Question 1151005
Formula should be A=Ie^(kt), assuming k is negative.


First part, given half life 950 years
{{{1/2=e^(950k)}}}

{{{ln(1/2)=950*k}}}

{{{k=ln(1/2)/950}}}

{{{k=-ln(2)/950}}}, 

{{{k=-0.0007296}}}
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