Pompeii, Inc., has sales of $52,000, costs of $23,800, depreciation expense of $2,450, and interest expense of $2,200. If the tax rate is 22 percent, what is the operating cash flow, or OCF? (Do not round intermediate calculations.) Operating cash flow The 2017 balance sheet of Dream, Inc., showed current assets of $4,530 and current liabilities of $2,830. The 2018 balance sheet showed current assets of $3,200 and current liabilities of $1,650. What was the company's 2018 change in net working capital, or NWC? (Do not round intermediate calculations. A negative answer should be indicated by a minus sign.) Change in NWC