Final answer:
Tucker is involved with a corporation where he owns shares and receives dividends as a part of the profit; likely a private corporation.
Step-by-step explanation:
Tucker is involved with a corporation, which is a business owned by shareholders. These shareholders have limited liability for the company's debts but share in the company's profits, and they may receive dividends as a direct payment from the firm. Based on the description that Tucker receives a check for 8% of the quarterly profit, it indicates Tucker is receiving a dividend on his investment. This kind of profit-sharing usually happens in private corporations where shareholders can be part of a profit-sharing plan.