Question 152345
{{{f(x)=(1.15x+700)/x}}} Start with the given function.



{{{f(1000)=(1.15(1000)+700)/1000}}} Plug in {{{x=1000}}}



{{{f(1000)=(1150+700)/1000}}} Multiply



{{{f(1000)=1850/1000}}} Add



{{{f(1000)=37/20}}} Reduce



So the solution is {{{f(1000)=37/20}}} which approximates to {{{f(1000)=1.85}}}



So average cost per directory is about $1.85