5 Income Equalities problems; please answer so that I may be able to further understand this topic, thank you!

a) What are the two characteristics of public goods? What are two characteristics of public goods and give two examples of public goods?

b) Why does the public sector, not the private sector provides public goods. What entity must provide these public goods? What is the free-rider problem?

c) What must the government do to fix a negative externality and how the government can correct a positive externality?

d) What are these types of taxes: Progressive, Proportional, and Regressive, and what are some examples of each?

e) What is the purpose of antitrust policies. Explain why monopolies are inefficient compared to perfect competitio/n