help with finance homework

Problem 1 What was the company's 2011 change in net working capital, or NWC? (Negative amount should be indicated by a minus sign.) The 2010 balance sheet of Greystone, Inc., showed current assets of $3,180 and current liabilities of $1,455. The 2011 balance sheet showed current assets of $3,030 and current liabilities of $1,700. Net working capital $ Problem 2 The 2010 balance sheet of Maria's Tennis Shop, Inc., showed long-term debt of $3.1 million, and the 2011 balance sheet showed long-term debt of $3.20 million. The 2011 income statement showed an interest expense of $150,000. During 2011, Maria's Tennis Shop, Inc. realized the following: Cash flow to creditors Cash flow to stockholders $ $ 50,000 90,000 Suppose you also know that the firm's net capital spending for 2011 was $1,340,000, and that the firm reduced its net working capital investment by $63,000. What was the firm's 2011 operating cash flow, or OCF? (Enter your answer in dollars, not millions of dollars, i.e. 1,234,567.) Operating cash flow $ Problem 3 Jetson Spacecraft Corp. shows the following information on its 2011 income statement: sales = $227,000; costs = $129,000; other expenses = $7,900; depreciation expense = $14,200; interest expense = $13,700; taxes = $21,770; dividends = $10,500. In addition, you're told that the firm issued $5,200 in new equity during 2011 and redeemed $3,700 in outstanding long-term debt. a. What is the 2011 operating cash flow? Operating cash flow $ b. What is the 2011 cash flow to creditors? Cash flow to creditors c. $ What is the 2011 cash flow to stockholders? Cash flow to stockholders $ d. If net fixed assets increased by $30,000 during the year, what was the addition to NWC? Addition to NWC $ Problem 4 You are given the following information for Calvani Pizza Co.: sales = $50,000; costs = $21,800; addition to retained earnings = $10,700; dividends paid = $1,000; interest expense = $4,200; tax rate = 35 percent. Calculate the depreciation expense. (Do not round intermediate calculations and round your final answer to nearest whole dollar amount.) Depreciation expense $