To access the course in Canvas click Canvas To access Pearson click Persone To access etext click this will only work if you have a subscription: Rook D Question 19 Cost LLC started business operations in 2020 and the following information was collected: units sales 3.750 units $40 per unit selling price contribution margin ratio 75% Margin of Safety percentage 30% The variable expense per unit is: $15.00 per unit $10.00 per unit $7.50 per $17.50 per unit Previous MacBook Pro