29 A business reported sales of $687,000, cost of goods sold of $234,000, and operating expenses of $214,000. Within the category operating expenses is $21.500 of depreciation and amortization expenses. The firm's marginal income tax is 45% Calculate the firm's operating cash flow. utor Select one: a $152,950 b. $146,550 c. $131,450 d. $157,650 e. $145,750