Math Please Help!!
posted by Kaleia .
Lynbrook West, an apartment complex, has 100 two-bedroom units. The monthly profit (in dollars) realized from renting x apartments is represented by the following function.
P(x) = -8x2 + 1760x - 31000
(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).