Question 48539
1) {{{90x + 30y <= 1140}}}=>{{{3x+y<=38}}}
2) {{{4 <=  x  <= 8}}}
3) {{{6 <=  y  <= 14}}}
4) {{{m < 2x}}}

{{{drawing(400,400,-20,20,-20,20,grid(1),
line(6,20,58/3,-20),
red(line(4,20,4,-20)),
red (line(8,20,8,-20)),
green (line(20,6,-20,6)),
green (line(20,14,-20,14)),
locate(8,14,A(8,14)),
locate(4,14,B(4,14)),
locate(4,6,C(4,6)),
locate(8,6,D(8,6)))}}}