Question 1088800
{{{700=1000*b^30}}}


{{{b^30=0.7}}}

{{{30*log((b))=log((0.7))}}}

{{{log((b))=log((0.7))/30}}}


{{{log((b))=-.005163}}}


{{{b=10^(-0.005163)}}}


{{{b=0.988}}}
{{{y=1000(0.988)^x}}}


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{{{y=300=1000*0.988^x}}}

{{{0.3=0.988^x}}}

{{{log((0.3))=x*log((0.988))}}}

{{{x=log((0.3))/log((0.988))}}}

{{{highlight_green(x=100)}}}  {{{minutes}}}