The pair of constraints enforces the quantity discount relationship on X3 is X32 ≤ M3Y3 and X31 ≥ 70Y3.
Relationship discounts especially on mortgages are known to be special loan terms that is said to be offered by financial institutions offer if a person have different types of accounts with them.
Note that The pair of constraints enforces the quantity discount relationship on X3 is X32 ≤ M3Y3 and X31 ≥ 70Y3 as it best tell what it is about.
Learn more about discount relationship from
https://brainly.com/question/10286547
#SPJ4