Question 843600
( dollars spent ) / ( dollars / minute ) = minutes of advertising
{{{ T = w(r) }}}
{{{ T = 2450 / r }}}
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The least minutes of advertising is:
{{{ T[min] = 2450/90 }}}
{{{ T[min] = 27.222 }}}
The most minutes of advertising is:
{{{ T[max] = 2450/45 }}}
{{{ T[max] = 54.444 }}}
The domain is 27.222 to 54.444 minutes