Answer:
3) Walsh-Healey Act of 1936 : sets the minimum wage for federal government construction contracts that are above $15,000 and involve the manufacturing of materials, supplies and equipment.
4) Fair Labor Standards Act of 1938: sets the federal minimum wage that applies in all the country, and other regulation.
Step-by-step explanation:
The Davis-Bacon Act of 1931: sets the minimum wage for federal government construction contracts that are above $2,000.
Sarbanes-Oxley Act of 2002: protects investors, it is not intended to regulate any type of wages.