Those on Medicare also automatically receive supplemental medical insurance

Which of the following is illustrated by the distance between the aggregate expenditure line and the 45-degree line at each level of real GDP?

a. The level of saving in an economy b. Unplanned inventory change c. Planned investment undertaken in an economy d. The marginal propensity to save e. The marginal propensity to consume

The assumption that people act in their best self-interest means people

a. do what gives them the greatest benefits at the lowest costs. b. are selfish. c. do what gives them the smallest benefits at the greatest costs. d. are irrational.