The demand function for a particular brand of LCD TV is given by p 1540-20x where p is the price per unit in dollars when x thousand television sets are sold (a) Find the revenue function. Note that Rx) will be in terms of thousands of dollars. ROX)-> (b) Determine the number of sets that must be sold in order to maximize the revenue. sets (c) To the nearest whole dollar, what is the maximum revenue? Note that Rx) is in terms of thousands of dollars. (d) To the nearest cent, what is the price per unit when the revenue is maximized? per unit