Question: Interpret the components of the mathematical equations that describe the linear programming problem for each of the following:
1. The double-subscripted notation for the objective function for transportation costs (Town B): 3x11+ 2x12 + 7x13 + 6x14
2. The double-subscripted notation for the supply constraint at Town B: x11 + x12 + x13 + x14 ≤ 5,000
3. The inequality symbol in the supply constraint
4. The double-subscripted notation for the demand constraint for Town C: x11 + x21 + x31 = 8,000
5. The variable x in these equations