A company can use two types of machine A and B, in a munifucturing plant the number of operators required and the running cost per day are gives as cost per day

machine A 6
machine B 3
max available 360
available operators 2 4 280
floor area profit per machine 20 30 write down the inequality constraints and profit function graph the inequalities from the graph determine of machines A and B which should be used maximize profit?