Respuesta :
cost for one doughnut=0.80+0.40=1.20
1.20x leq [tex]1.20x \leq 5.20 x \leq 5.20/1.20 as x is an integer so x=4[/tex]
1.20x leq [tex]1.20x \leq 5.20 x \leq 5.20/1.20 as x is an integer so x=4[/tex]