Los Angeles-based Westwood One Inc. said it...

Los Angeles-based Westwood One Inc. said it signed a definitive agreement with Amway Corp. to acquire the operating assets of Mutual Broadcasting System . . . A revised takeover offer by Turner Broadcasting System for MGM/UA Entertainment was approved by directors of both companies, officials of both companies said . . . The Investment Company Institute reported that the assets of the nation’s 350 money-market mutual funds rose $101.6 million in the week ended Oct. 2 . . . Deere & Co. reported that 480 employees will be laid off at the firm’s Waterloo, Iowa, component and tractor works on Oct. 28.