By Matt Ottap, Business Writer
Average long-term U.S. mortgage rates jumped by more than a quarter-point this week to their highest level since 2007 as the Federal Reserve intensified its effort to tamp down decades-high inflation and cool the economy.Mortgage buyer Freddie Mac reported Thursday that the 30-year rate climbed to 6.29%, from 6.02% last week. That's the highest it’s been since . . .