Question 868007
{{{N=C/(1+((300)/150))*e^(-r*t) }}}
{{{N=C/(1+(2))*e^(-r*t) }}}
{{{N=C/(3)*e^(-r*t) }}}
{{{3N/C=e^(-r*t) }}}
{{{-r*t=ln((3N)/C)}}}
{{{r=-(1/t)*ln((3N)/C)}}}