Respuesta :
x is time spent walking the dog, y is the time washing cars
[tex]x + y \leqslant 20 \\ 7.5x + 6y \geqslant 92[/tex]
[tex]x + y \leqslant 20 \\ 7.5x + 6y \geqslant 92[/tex]
Let x=dog-walking job
Let y= car was attendant
Inequality: 7.50x+6y>92
Inequality: x+y<20