Persons who die before age 65 or soon thereafter, receive little or nothing from their Social Security payroll tax payments. Which of the following groups is harmed the most by this attribute of the Social Security retirement system?

Assuming all else equal, if a household is optimistic about future income, it is likely to cause:

A) the current credit supply curve of the household to shift to the left. B) an upward movement along the current credit supply curve of the household. C) the current credit supply curve of the household to shift to the right. D) a downward movement along the current credit supply curve of the household.

Refer to Figure 4-1. Arnold's marginal benefit from consuming the fourth burrito is

A) $0. B) $1.00. C) $2.50. D) $3.00.