The Westfall Company has a large contract to produce garden hoses for a large discount chain. Westfall is considering four different manufacturing facilities in Boise, Denver, Salt Lake City and Reno. Their main demand locations are in Seattle, Portland, San Francisco and Los Angeles. All pertinent data is given in the table below.

Sources	Fixed Cost	Shipping Cost to Destination:	Capacity
Seattle	Portland	San Francisco	Los Angeles
Boise	160,000	4	6	9	4	10,000
Denver	230,000	9	7	7	9	10,000
Salt Lake City	450,000	8	4	2	8	12,000
Reno	390,000	12	6	2	12	9,000
	Demand	9,000	10,000	10,000	12,000

Management must come up with a plan to decide which facilities are going to be open and how to manage the whole supply chain.Formulate this problem as a Linear Programming Problem

1. What is the objective function?
2. What are the constraints?
3. Which manufacturing facilities are open? List any unused capacities at the plants.
4. What is the total cost of this supply chain?