anta Cruz Bottling is a manufacturer of organic soft drinks on the coast of central California. Its products are enjoying a growing reputation and increased demand throughout the American Southwest. Because of the high cost of transporting soft drinks, they are considering a new plant to serve the states of New Mexico and Arizona. A key concern in their search for a new location is the resultant transportation costs to serve their key markets. Following is a list of cities where their main wholesale customers are located, along with estimated annual demand in cases of product for each. CITY x-COORDINATES y-COORDINATES NUMBER OF CASES Phoenix 280 280 21,500 Tucson 380 155 17,000 Albuquerque 830 480 25,000 Santa Fe 880 525 13,500 a. Use the centroid method to recommend a location for the new bottling plant. (Round your answers to 1 decimal place.)