American Motors said slow sales of its...

American Motors said slow sales of its Renault Alliance and Encore subcompacts has forced its Kenosha, Wis., plant to shut down this week, idling 4,500 hourly workers . . . Sun Co. raised the price it will pay for West Texas Intermediate crude oil by 50 cents a barrel to $27.50 . . . Sanders Associates will acquire Terak Corp., a producer of color graphic displays and work stations, for about $5.5 million . . . Eastman Kodak asid it is extending its tender offer for all Verbatim Corp. shares until 10 a.m. EDT Wednesday, May 8. As of last Friday, it had received tenders of approximately 16,143,000 shares . . . Polaroid announced a secondary offering of about 2.56 million shares of its common stock, representing 8.3% of the total. The shares were sold by former Chairman Edwin H. Land, his wife and two foundations . . . Varian Associates said it has completed the acquisition of substantially all of the assets of Continental Electronics of Dallas, a manufacturer of high-power radio frequency transmitters . . . Ohio Mattress Co. said its Monterey Manufacturing unit has agreed to acquire the assets of Dyna-Clean Inc. for about $3 million in cash plus additional amounts to be determined later . . . Holiday Inns Inc. said its shareholders approved changing the company’s name to Holiday Corp. and adding certain anti-takeover provisions to its charter.