According to Milton Friedman, regular income can be divided into permanent income and transitory income

If a particular choice that an individual faces gives him a benefit of $20 but costs $30, the net benefit from making this choice equals:

A) $20. B) $10. C) -$10. D) -$30.

Which of the following is not a seriously proposed way to solve the problems of funding Social Security?

a. increase Social Security taxes b. reduce future benefits c. increase the number of years of earnings used to determine benefits d. create a Social Security national lottery e. change the law to allow the Social Security system to invest some of the trust funds in the private sector