Norton Company reported total sales revenue of $55,000, total expenses of $45,000, and net income of $10,000 on its income statement for the year ended December 31, 2010. During 2010, accounts receivable increased by $4,000, merchandise inventory increased by $6,000, accounts payable decreased by $2,000, and depreciation of $18,000 was recorded. Therefore, based only on this information, the net cash flow from operating activities using the indirect method for 2010 was: