The Federal Reserve appears to be on a path to raise interest rates by another 0.75 percentage point this month. Chairman Jerome Powell’s public pledge to reduce inflation even if it increases unemployment. Powell’s remarks and tone placed him among the Fed officials who favor a more aggressive pace of rate increases than others, an expert says. It could take up to two years for hikes to make a big inflation impact, but it could take two years to make it big. An expanded version of this report appears at WSJ.com. Read on: What happens next now that Jackson Hole is over? More Fed hawkishness is in the cards, says Tim Duy, chief U.S. economist at SGH Macro Advisors. . . .