Repeat Example 4 if the shipping charge from plant A to outlet I is increased to $7 and the shipping charge from plant B to outlet II is decreased to $3.

Data from Example 4

A computer manufacturing company has two assembly plants, plant A and plant B, and two distribution outlets, outlet I and outlet II. Plant A can assemble at most 700 computers a month, and plant B can assemble at most 900 computers a month. Outlet I must have at least 500 computers a month, and outlet II must have at least 1,000 computers a month. Transportation costs for shipping one computer from each plant to each outlet are as follows: $6 from plant A to outlet I, $5 from plant A to outlet II, $4 from plant B to outlet I, $8 from plant B to outlet II. Find a shipping schedule that minimizes the total cost of shipping the computers from the assembly plants to the distribution outlets. What is this minimum cost?