If the revenue rx is given by rx 6000 50x - x2 where x is

Question

The revenue of a charter bus company depends on the number of unsold seats. If the revenue R(x) is given by R(x) = 6000 + 50x - x², where x is the number of unsold seats, find

(a) Maximum revenue

(b) Number of unsold seats that corresponds to the maximum revenue in (a).