The manager of a large apartment complex has found that the profit (in thousands of dollars) is given by P (x) = –2x² + 500x – 30000, where x is the - number of units rented. Answer the following questions: (i) What is the profit when 120 units are rented? (ii) How many units must be rented to earn a profit of $800,000? (iii) How many units should be rented to produce the maximum profit? (iv) What is the maximum profit?

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