Subway, with more than 20,000 out lets in the U.S., is planning for a new restaurant in Buffalo, New York. Three locations are being considered. The following table gives the factors for each site. FACTOR Weight Maitland Baptist Church North side Mall Space .30 60 70 80 Costs .25 40 80 30 Traffic density .20 50 80 60 Neighbourhood .15 50 70 40 Income Zoning laws .10 80 20 90 a) at which site should Subway open the new restaurant? b) If the weights for Space and Traffic density are reversed, how would this affect the decision?