n the following assignment problem example that we solved in class, the city wants to know if it requires that all companies be assigned to at least one bus route, how much more cost it would incur (compared to the total cost without adding such requirement). The city of Spring View is taking bids from six bus companies on the eight routes that must be driven in the surrounding school district. Each company enters a bid of how much it will charge to drive selected routes, although not all companies bid on all routes. The data are listed in Table 5.4. (If a company does not bid on a route, the corresponding entry is blank.) The city must decide which