Wall St opens higher on Fed optimism

Nov 11 (Reuters) - Wall Street's main indexes opened higher on Friday, extending gains from the previous session after soft inflation data supported expectations of smaller interest rate hikes by the U.S. Federal Reserve.The Dow Jones Industrial Average (.DJI) rose 82.38 points, or 0.24%, at the open to 33,797.75. The S&P 500 (.SPX) opened higher by 7.35 points, or 0.19%, at 3,963.72, while the Nasdaq Composite…