On the following graph, use the green point (triangle symbol) to plot the weekly total revenue when the market price is $40, $60, $80, $100, $120, $140, and $160 per scooter. 5120 A 4800 Total Revenue 4480 4160 3840 TOTAL REVENUE (Dollars) 3520 3200 2880 2560 2240 0 2 40 60 80 100 120 140 160 180 200 220 240 260 PRICE (Dollars per scooter) According to the midpoint method, the price elasticity of demand between points A and B is approximately_ Suppose the price of scooters is currently $80 per scooter, shown as point A on the initial graph. Because the demand between points A and B is V, a $20-per-scooter decrease in price will lead to in total revenue per week. In general, in order for a price decrease to cause a decrease in total revenue, demand must be