using graphs if necessary. thanks so much. around 550 words

Four housemates are looking at installing security cameras around (the outside of) their house after recent theft of articles. The MB each receives from the instalment of cameras is below. A security camera costs $200 to purchase and have installed. a. Graph the market demand for security cameras for the household b. How many cameras will be purchased by the household? Is this the best outcome for the household? If not the best outcome, how could a better one be achieved? Explain. Quantity MB for Sally MB for Tom MB for Dick MB for Harry 6 20 5 100 0 5 30 10 4 40 15 140 50 3 50 20 160 100 2 60 25 180 200 1 70 30 200 300