last month ABC company sold 24000 liter of  ice cream. the variable cost were  $2.7 perlitter and each litter of selling contribute 25% of its revenue to Fixed costs and profit it's has discovered a new  suppler which in enabled it both to reduce it's cost  by $0.4 perlite and improve quality however its estimated that it will have spend another  $3000 on advertising per month  to inform customer of that improvement profit Last month  $10000  hint profit cost=0.25p1what is the previous month cost function?2 what is the new cost function with new supplies 3 How many litter ABC company have to sell to increase the profits 20% assuming it's keeps price the same.4 If ABC company increase price 10%.what difference will move to sell (above questions 3)