Question 1123615
{{{y=p*b^x}}}


{{{system(p*b^10=628,p*b^20=1357)}}}


{{{(b^20)/(b^10)=1357/628}}}


{{{b^10=2.160828}}}


{{{log((b^10))=log((2.160828))}}}


{{{log((b))=log((2.160828))/10}}}  {{{using_base_ten_logs}}}


{{{log((b))=0.033462}}}


{{{highlight_green(b=1.08)}}}

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{{{p*1.08^10=628}}}

{{{p=628/(1.08^10)}}}

{{{highlight(p=291)}}}----------initial count