Determine Enforceability Of Contracts Practice Test

A property owner (individual) agrees to lease warehouse space (lease contract) to a tenant (business entity) for use as a lawful distribution center, but a side letter signed by both parties requires the tenant to store stolen goods. The tenant later refuses to store stolen goods and the owner sues to enforce the side letter. Under these circumstances, is the side letter enforceable?

A city government (government entity) contracts with a construction company (business entity) for road repairs (service contract). The contract requires the company to pay a city inspector $5,000 "to expedite approvals" in addition to the stated contract price. The company later refuses to pay the $5,000 and the city sues to enforce that clause. Under these circumstances, is the $5,000 payment clause enforceable?