Lawson Advertising Agency is trying to persuade Kansas City Sailboards Company to spend more of advertising. The agency's argument is that a constant and strong positive relationship exists between advertising and sales in the sailboard industry. Sue Lawson presents these data taken from industry data for stores similar in size and market share to Kansas City Sailboards Advertising Expense $2,500 Annual Sales $ 90,000 3,000 110,000 3,500 124,000 4,000 130,000 4,500 143,000 5,000 147,000 150,000 5,500 Required: 1. Use the high-low method to estimate the relationship between increased advertising and sales. Amount of increased sales for every dollar of advertising 2. Graph annual sales and advertising expense. (Use the line tool to draw the annual sales and advertising expense. To complete the graph, click annual sales and then click the graph to bring up date coordinates. Enter the exact dete coordinates for each activity level