Reconsider Case 3-5. The Springfield School Board now has made the decision to prohibit the splitting of residential areas among multiple schools. Thus, each of the six areas must be assigned to a single school.

a. Formulate and solve a BIP model for this problem under the current policy of providing busing for all middle school students who must travel more than approximately a mile.

b. Referring to part c of Case 3-5, determine how much the total busing cost increases because of the decision to prohibit the splitting of residential areas among multiple schools.

c, d, e, f. Repeat parts d, e, f, g of Case 3-5 under the new school board decision to prohibit splitting of residential areas among multiple schools?