If, as price increases by 10 percent, total revenue decreases by 10 percent demand is

The aggregate demand curve shifts to the right when there is ________

A) a negative price shock B) a decrease in the nominal interest rate C) a decrease in inflation D) all of the above E) none of the above

Which of the following is not true? a. Collusion is relatively rare, in part because it is illegal in many countries

b. Collusion is relatively rare, even though members find it easy to agree on key decisions. c. Collusion is relatively rare, in part because members frequently have an incentive to cheat on the cartel. d. Collusion is harder to maintain when differentiated products are involved, which introduce many ways to undercut a collusive agreement.