a)In March 2011, Toyota launched another round of discounts, offering zero percent financing for five-year loans and $1,000 additional givebacks to customers. Following Toyota's move, Honda increased rebates on certain pickup models from $1,000 to $1,500, while Hyundai announced that 2012 minivans would come with a $1,000 rebate.

b)In spring 2009, the U.S. wireless telecommunications industry hoped that mergers among firms would decrease the number of rivals and eliminate cutthroat competition. However, the wireless carriers faced challenges from new technologies and a rush of new entrants into the market. Unlike their counterparts in the traditional phone industry, wireless companies never enjoyed a period of monopoly status.

Chinese cooking is the most popular food in America that is not dominated by big national chains. Chinese food is typically cooked in a wok that requires high heat and a special stove. Specialized chefs are also required. Small mom-and-pop restaurants comprise nearly all of the nation's 36,000 Chinese restaurants, which have more locations than McDonald's, Burger King, and Wendy's combined