Prudential California Realty and Jon Douglas Co....

Prudential California Realty and Jon Douglas Co. completed the merger of the two real estate brokerage firms. The combined firm will operate under The Prudential-Jon Douglas Co. banner. . . . Teamsters drivers and mechanics approved an agreement that ended a monthlong strike against Ryder System Inc., the nation’s largest car hauling company. . . . Detroit Newspapers Inc., the joint operating company for the Detroit Free Press and Detroit News filed a suit in U.S. District Court against six striking unions, alleging violation of federal racketeering laws through a campaign of violence and intimidation. . . . Carl Sagan settled a suit against Apple Computer Inc., which had picked the astronomer’s name as the code name for a new computer.