Jeb Bush says he’s leaving health care company board

Jeb Bush is stepping down from the board of directors of Tenet Healthcare Corp.

The health care company said in a regulatory filing Wednesday that the former Florida governor would resign his seat at the end of the year. Bush has been a director since 2007.

Tenet noted that Bush is “not resigning on account of any disagreement” with the company.

The move comes as Bush actively explores a presidential run and unwinds some of his business commitments. A spokesman said last week that the potential Republican contender will leave his advisory role with British banking giant Barclays by Dec. 31.

According to corporate filings, Bush still sits on the boards of three other companies and is chairman and manager of a Florida-based private equity and business advisory group.

McDonald’s Japan to serve large fries again next month

McDonald’s Japan said Friday it will resume serving all portion sizes of fries on Jan. 5 after resolving shortages due to labor disruptions on the U.S. West Coast. The fast-food giant began limiting customers to orders of small fries earlier this month.

The company said in a notice on its website that its fry inventory had improved thanks to air shipments and extra sea shipments from the U.S. East Coast. It apologized and said it would try to avoid further shortfalls at its 3,100 outlets in Japan.

Tesla upgrading Roadster to get more miles per charge

Tesla said improvements it is making to its older Roadster model will let the electric car travel about 400 miles on a single charge. The Palo Alto, California, company said a new battery, new tires, and other improvements will boost the car’s range 40 to 50 percent compared to the original.

Tesla plans to demonstrate the higher range with a drive from San Francisco to Los Angeles – about a 400-mile trip – early next month.

Tesla stopped making Roadsters in 2012, the year it introduced the Model S.

Five-day rally ends for Russian ruble

The Russian currency on Friday ended its five-day rally and declined 4 percent as markets remain jittery over the outlook of the Russian economy.

The ruble lost nearly half of its value against the dollar this year. Russian monetary officials have made stabilizing the currency a priority, introducing a number of drastic measures to support it such as raising the key interest rate to a whopping 17 percent.

– From news service reports