WASHINGTON (AP) — The U.S. economy surprisingly accelerated to a 2.4% annual growth rate from April through June, showing continued resilience in the face of steadily higher interest rates resulting from the Federal Reserve’s 16-month-long fight to bring down inflation. Thursday’s estimate from the Commerce Department indicated that the gross domestic product — the economy’s total output of goods and services — picked up from the 2% growth rate in the January-March quarter. Last quarter's expans