Nez company provided services for $7,500 cash during the 2012 accounting period. nez incurred $6,000 expenses on account during 2012, and by the end of the year, $3,000 of that amount had been paid with cash. nez paid dividends of $900 to stockholders during the year. assume that these are the only accounting events that affected nez during the 2012 accounting period. what is the cash flow from operation for 2012?