In a market economy, who makes the decisions that guide most economic activity?

(Consider This) Consumers might leave a fast-food restaurant without being served because:

A. they are misinformed about the marginal cost and marginal benefits of the food being served. B. they conclude that the marginal cost (monetary plus time costs) exceeds the marginal benefit. C. the environment is not conducive to a rational choice. D. the lines waiting for service are not of equal length.

If the money wealth, interest rate, and international effects reduce the quantity of aggregate demand by 3 percent when the price rises by 6 percent and the multiplier is 2, then the slope of the aggregate demand curve is:

A. ?3. B. ?2. C. ?1. D. ?1/2.