Please show all work.

The starting solution using northwest-corner method is: (Note: You must enter a shioment in everv cell. even if the shioment is 0.1 a) The total cost of the initial solution developed using the northwest-corner method =$ The starting solution using the intuitive lowest-cost method is: (Note: You must enter a shioment in everv cell. even if the shioment is 0.1 b) The total cost of the initial solution developed using the intuitive lowest-cost method = ? c) The total cost of the optimal solution =$