30. The Japanese dango is (LO2) a) a way to ensure that government construction contracts will always go to the low bidder b) a negotiating process under which construction firms take turns receiving government contracts c) a cartel whose sole purpose is to keep construction prices high d) an organization that helps new firms enter the construction industry numbos (8 31. Which statement is true? (LO6) a) Perfect competition in the college textbook publishing industry has kept prices constant. b) The college textbook publishing industry is highly oligopolized. c) If it were not for the sale of used books, college textbook publishers would make much smaller profits. d) Because college textbooks are often accompanied by supplements, this has tended to keep their prices down