Some of the numbers are prefilled in by the system. I need help with the ones that are not filled in. Please help me.

Required: a. Assume that only one product is being sold in each of the four following case situations: b. Assume that more than one product is being sold in each of the four following case situations: Complete this question by entering your answers in the tabs below. Assume that only one product is being sold in each of the four following case situations: (Loss amounts should be indicated by a minus sign.)