Practice Exercise 3.
If any help to someone else, the directions were a little unclear to me regarding the discount.
The discount is described as, "discount is per unit".
I took this to mean the quantity multiplied by the discount equaled the total discount for that line.
The solution, however, shows this discount is intended to be a percentage discount which changes how you need to account for the discount.
I'm including my original answer before discovering the discount is a percentage discount.
