Using the following table and the equations underlying each of the four basic financial statements, show (a) that the balance sheet is in balance, (b) that net income is properly calculated, ( d what caused changes in the retained earnings account, and ( d ) what caused changes in the cash account. (Cash outflows should be indicated with a minus sign.) Assets Liabilities Stockholders' Equity Revenue Expenses Net Income Dividends Beginning Retained Earnings Ending Retained Earnings Cash Flows from Operating Activities Cash Flows from Investing Activities Cash Flows from Financing Activities Beginning Cash Ending Cash $19,200 14,250 4,950 11,500 9,700 1,800 500 4,500 5,800 2,600 (2,000) (1,400) 2,000 1,200