Canyon Tours showed the following components of working capital last year:

	Beg of Year	End of Year
Accounts receivable	25,400	23,700
Inventory	12,700	13,900
Accounts Payable	15,200	17,900

What was the change in net working capital during the year? (A negative amount should be indicated by a minus sign.)

If sales were $36,700 and costs were $24,700, what was cash flow for the year? Ignore taxes.