Final answer:
In a mixed contract involving terms for both goods and services, the governing source of law is established by determining the predominant thrust of the contract subject matter.
Step-by-step explanation:
In a mixed contract involving terms for both goods and services, the governing source of law is established by determining the predominant thrust of the contract subject matter. This means that the primary focus of the contract, whether it is the goods or the services being provided, will determine which body of law applies. For example, if the majority of the contract relates to goods, the Uniform Commercial Code (UCC) would govern the contract, while if the majority of the contract relates to services, common law principles would apply.