At the beginning of the year, Becky's wealth was $30,000. During the year, she earned $50,000 of income, paid $6,000 in taxes and consumed $43,000 of goods and services. What is Becky's wealth at the end of the year?

A decrease in wealth would cause the IS curve to

A) shift up and to the right. B) shift down and to the left. C) remain unchanged. D) shift up and to the right only if people face borrowing constraints.

In a competitive market equilibrium

A) total consumer surplus equals total producer surplus. B) marginal benefit and marginal cost are maximized. C) consumers and producers benefit equally. D) the marginal benefit equals the marginal cost of the last unit sold.