derivative of profit b. Marginal profit = profit * number of units c. Marginal profit = profit d. Marginal profit = derivative of profit QUESTION 4 Use the graph to match the limit with the correct answer: y = f (x) - v lim f (x) = A. -1 x - - 2+ B. DNE - v lim f ( x) = C. O x - -2- - v lim f ( x) = x - - 2 - f (2) =