Let the number of copies be x;
The printer would charge ;
[tex]3x+38[/tex]The office store would cost ;
[tex]6x+29[/tex]For the cost to be equivalent;
[tex]\begin{gathered} 6x+29=3x+38 \\ 3x=9 \\ x=3 \end{gathered}[/tex]Thus the number of copies is 3;
The number of copies is 3(3)+38 = $47