I don't understand how to find the solution, please help with the steps.

6. Elasticity and total revenue The following graph illustrates the weekly demand curve for motorized scooters in Scottsdale. Use the green rectangle (triangle symbols) to compute total revenue at various prices along the demand curve. Note: You will not be graded on any changes made to this graph. (? 195 Total Revenue PRICE (Dollars per scooter) 30 15 Demand O 4 12 16 20 24 28 32 36 40 44 48 52 QUANTITY (Scooters)On the followr'ng graph, use the green point (triangle symbol} to plot the weekly total revenue when the market prlce ls $30, $45, $60, $75, $90, $105, antir $120 per scooter. C?) 1460 A; 1320 Total Revenue 11st: 10-1-0 one 620 TOTiL RE'Ll'ENUE (Dollars) 430 34o o 15 3o 45 Ho r5 931us1zo1351so1651so1es PRICE [Dollars per scooteri According to the midpoint method, the price elasticity of demand between points A and Bis approximately V . Suppose the price of scooters is currently $45 per scooter, shown as point B on the initial graph. Because the demand between points A and Bis v , a $15-perscooter increase in price will lead to v in total revenue per week. In general, in order for a price increase to cause a decrease in total revenue, demand must be 7