Final answer:
Mary Love has entered into a third-party beneficiary contract by signing a charge ticket for herself and Mary Jordan, with Jordan being the beneficiary of the agreement.
Step-by-step explanation:
If Mary Love signs a charge ticket for lunches at Big Star for Mary Jordan and herself, she has entered into a third-party beneficiary contract. A third-party beneficiary contract is one in which the parties to the contract enter into an agreement for the benefit of a third party. In this case, Mary Love could be seen as the promisor who promises to pay for the lunch, Big Star as the promisee who provides the lunch service, and Mary Jordan as the third-party beneficiary who receives the benefit of having lunch paid for without being directly involved in the contract between Mary Love and Big Star.