What you should know as US economy expands at brisk 3.3% pace

Led by a rise in business investment, the U.S. economy grew at an annual pace of 3.3 percent from July through September, its fastest rate in three years.
The Commerce Department estimated Wednesday that third-quarter growth exceeded the 3 percent annual expansion for the period that it had initially reported last month.
The performance, achieved despite damage from two devastating hurricanes, marked the fastest expansion in gross domestic product — the broadest gauge of economic output &m