The Federal Reserve had been expected to raise its benchmark interest rate a quarter point to a target range of 1.25 percent to 1.5 percent one notch higher as the U.S. economy continues to get healthier. The move will push the target range to 1.25 percent to 1.5 percent. The rate is pegged to a wide variety of debt instruments, such as credit cards and adjustable-rate mortgages. Policy makers raised their expectations for economic growth in 2018. The central bank now expects the economy to grow at a slightly faster rate of 2.5%, compared with a previous forecast of 2.1%.