Mary anticipates selling 40 units. If she sales 40 units, ner sale revenue would be $1,200. Her contribut margin would equal $800. Fixed costs are o Mary is considering placing an advertisment describing the product and its features in the ion book fair's brochure. The advertisement will cost $500. This cost will be fixed bic it must be paid and will not change regardless the number of units Mary sells. Of A. Mary anticipates that advertising will increase Sales by 10% to 44 packages. Should Mary advertise? Prove your answer with data. B. If Mary advertises, what must she sell her 44 Software packages for to have a net income. of #800 after paying for advertising/Round Sp to 2 www. decimals