A community has four residents. The table shows the number of dental visits each resident will have. Calculate the total quantity demanded at each price. Then graph the relation between price and total quantity, with total quantity on the horizontal axis.
Prices: $40, $30, $20, $10, $0
Abe’s Quantity: 0 ,0, 0, 1, 1
Beth’s Quantity: 0, 1, 1, 2, 2
Cal’s Quantity: 0, 0, 0, 1, 1
Don’s Quantity: 1, 1, 2, 2, 3