Wall Street opened on a positive note this morning following good news about U.S. economic growth.<br/> <br />Second-quarter growth came in much stronger than expected, overshadowing a weak report on the labor market.<br/> <br />Gross domestic product grew at a 4 percent annual rate in the second quarter.<br/> <br />That's above the 3 percent rate that had been expected -- and a sharp reversal from the weather-impacted first quarter, when the economy contracted 2.9 percent.<br/> <br />But U.S. companies hired only 218,000 workers in July, a level that was below analysts' projections and was also down from June's numbers.<br/> <br />Still, it's the sixth month in the row the U.S. economy added 200,000 jobs or more.<br/> <br />That hasn't happened since 1997.<br/> <br />The U.S. jobless rate is now at a six year-low of 6.1 percent.<br/> <br />That'll be something the U.S. central bank will likely consider on Wednesday -- as Federal Reserve Chair Janet Yellen comes out of two-days of meetings.<br/> <br />Many economists say the impr
