Question 1105058
If the number of subscriptions in thousands when the trend began was
{{{900/1000=0.9}}} , and
each year after that, the number has become
{{{"100%"-"18%"="86%"=86/100=0.86}}} of what it was the year before, then
{{{s(x)=0.9*0.82^x}}}
models the number of subscription in thousands where x represents the number of years since the trend has been observed.
 
If the function {{{s(x)=0.9*0.82^x}}} models the number of subscription in thousands where x represents the number of years since the trend has been observed, then
{{{s(0)=0.9*0.82^0=0.9*1=0.9}}} is
the number of subscriptions in thousands when the trend began.
That would be {{{0.9*1000=900}}} subscriptions when the trend began.
Also, {{{s(x)=0.9*0.82^x}}} means that every year the number of subscriptions gets multiplied by
{{{0.82=82/100="82%"="100%"-"18%"}}} ,
and that means that the number of subscribers has
decreased by {{{"18%"}}} each year since the trend began.