Question 1056667
<s>P=P0e-0.15t</s>


P=P[o]e^(-0.15t)
{{{P=P[o]e^(-0.15t)}}}



FIND HALF-LIFE.
{{{1/2=1*e^(-.15t)}}}

{{{ln(1/2)=ln(1)-0.15t}}}

{{{ln(2)=0-(-0.15t)}}}


{{{ln(2)=0.15t}}}


{{{highlight(t[half]=ln(2)/0.15)}}}