Can you please help me understand how to do this?

Problem 11s.10 (similar to) Question Help As purchasing agent for Eynan Enterprises in Richmond, Virginia, you ask your buyer to provide you with a ranking of "excellent" (worth 4 points), "good" (3 points), "fair" (2 points), or "poor" (1 point) for a variety of characteristics for two potential vendors, Donna Inc. (D) and Kay Corp. (K). You suggest that "Products" total be weighted 0.4, the "Company" total be weighted 0.2, and the "Service" and "Sales" totals each be weighted 0.2. The buyer has returned the following ranking. Which of the two vendors would you select? Click the icon to view the rankings. You should choose vendor Kay Corp. , with a weighted score of (Enter your response rounded to one decimal place.) Table 1: Company Excellent (4) Good (3) Fair (2) Poor (1) KD K D K D Financial Strength Manufacturing Capability Research Facilities Geographical Locations Management Labor Relations Trade Relations K D KD DK K D Table 2: Service Excellent (4) Good (3) Fair (2) Poor (1) KD Deliveries on Time Handling of Problems Technical Assistance KD D Table 3: Products Good (3) Fair (2) Poor (1) Excellent (4) K D Quality Price Packing D K K D Table 4: Sales Excellent (4) Good (3) Fair (2) Poor (1) D K Product knowledge Sales Calls Sales Service DK K D