Marginal Revenue for an Apartment Complex Lynbrook West, an apartment complex, has 100 two-bedroom un represented by the following function. P(x) = -8x2+1630x - 32000 (a) What is the actual profit realized from renting the 61st unit, assuming that 60 units have already been rented? $ (b) Compute the marginal profit when x = 60 and compare your results with that obtained in part (a). $