Four airlines have ordered seven jets with a total value of about $240 million from Seattle-based Boeing Commercial Airplane Co., the company said . . . The purchase of the Houston Post for $150 million by an affiliate of MediaNews Group Inc. should be completed by late next week after approval from by the Federal Trade Commission and Justice Department, a company spokeswoman said . . The Investment Company Institute reported that the assets of nation's 411 money-market mutual funds rose $558 million in week ended Nov. 11 to $261.11 billion . . . Foreign steel's share of the U.S. market declined to 19.4% in September and was little changed at 22.7% for the first nine months of the year, steel importers and producers said.