NEW YORK (AP) — The Federal Reserve cut its benchmark interest rate by a quarter point Wednesday for the third time since September, bringing its key rate to about 3.6%, the lowest in nearly three years. Before September, it had gone nine months without a cut. The benchmark rate is the rate at which banks borrow and lend to one another, and the Fed has two goals when it sets the rate: one, to manage prices for goods and services, and two, to encourage full employment.