Question 811253
Find t when {{{0.1Ao=Ao(0.82)^t}}}
'
{{{0.1=(0.82)^t}}}

{{{log(10,0.1)=log(10,(0.82^t))}}}

{{{-1=t*log(10,0.82)}}}


{{{t=(-1)/(log(10,0.82))}}}


{{{t=(1/0.0862)}}}


{{{highlight(t=11.6)}}} years