all you need is in the photo please answer fast

system of inequalitities is
[tex]\begin{gathered} 30m+45f\le60\times30 \\ 30m+45f\le1800 \end{gathered}[/tex]thats the first equation, then
[tex]0\le f\le20[/tex]and
[tex]m\ge0[/tex]answer is the second one