DATAFile: Williamson Consider the transportation model in the file Williamson, which is very similar to the Foster Generators model discussed in this chapter. Williamson produces a single product and has plants in Atlanta, Lexington, Chicago, and Salt Lake City and warehouses in Portland, St. Paul, Las Vegas, Tucson, and Cleveland. Each plant has a capacity, and each warehouse has a demand. Williamson would like to find a low-cost shipping plan. Mr. Williamson has reviewed the results and notices right away that the total cost is way out of line. Use the Formula Auditing tool under the Formulas tab in Excel to find any errors in this model. Correct the errors. (Hint: The model contains two errors. Be sure to check every formula.) After correcting all errors what is the resulting shipping cost (in dollars) calculated by the model. (Round your answer to the nearst dollar.) $