In deciding whether or not to set up a new manufacturing plant, analysts for a popcorn company have decided that a linear function is a reasonable estimation for the total cost C(x) in dollars to produce x bags of microwave popcorn . They estimate the cost to produce 10,000 bags as 5410 and the cost to produce 15,000 bags as $7950 . Find the marginal cost of the bags of microwave popcorn to be produced in this plant .