Bedrock Gravel Corp. shows the following information on its 2007 income statement: sales $162,000; costs = $93,000; other expenses = $5,100: depreciation expense = $8,400; interest expense = $16,500; taxes = $14,820; dividends $9,400. In addition, you're told that the firm issued $7,350 in new equity during 2007 and redeemed $6,400 in outstanding long-term debt. a. What is the 2007 operating cash flow? b. What is the 2007 cash flow to creditors? c. What is the 2007 cash flow to stockholders? d. If net fixed assets increased by $12,000 during the year, what was the addition to NWC?