Referring to the Aggregate Demand - Aggregate Supply diagram in Figure 8.1, which box should be filled with the label AS for the aggregate supply curve? 

A radio station gives "free money" to those listeners whose names are drawn and announced over the airwaves from postcards the listeners sent into the radio station. Is the money really free for the listener?

If an economist finds that when consumer incomes increase, consumers buy more cars, Ceteris paribus, then

A. the price of cars must be decreasing. B. all other things remain constant. C. the price of gas must be decreasing. D. the interest rate on car loans must be decreasing.