Final answer:
Contracts can be matched to the appropriate source of law based on their type and the rights and obligations involved. The UCC is applicable in the case of a sale of goods, while the common law applies to contracts for services. For contracts involving both goods and services, both the UCC and the common law may apply.
Step-by-step explanation:
The best source of law that matches each contract can be determined by considering the type of contract and the rights and obligations involved. By analyzing the contracts in the question, we can match them to the appropriate source of law as follows:
BigCo sells five laptop computers to a retailer -
This contract involves a sale of goods, and the UCC (Uniform Commercial Code) would be the appropriate source of law for this transaction. The UCC provides rules and regulations governing commercial transactions.
Pieter contracts to paint a portrait of Jasper -
This contract involves services being provided by Pieter, and the common law would be the appropriate source of law for this contract. The common law consists of legal principles and precedents established by court decisions.
Contract for installation (10 percent) and goods (90 percent) -
This contract involves both the sale of goods and the provision of services. In this case, both the UCC and the common law would apply. The UCC would govern the sale of goods aspect, while the common law would apply to the service provision.