The manager of a large apartment complex knows from experience that 100 units will be occupied if the rent is 324 dollars per month. A market survey suggests that, on the average, one additional unit will remain vacant for each 3 dollar increase in rent. Similarly, one additional unit will be occupied for each 3 dollar decrease in rent. What rent should the manager charge to maximize revenue? 32400 Note: Revenue is the total amount of money brought in; in this problem it is equal to the rent per apartment times the number of apartments rented