Solve the Problem $\operatorname{cost} \mathrm{C}(\mathrm{x})$ In Dollars to Produce $x$ Bags of Microwave Popcorn

Solve the problem.
-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 $\operatorname{cost} \mathrm{C}(\mathrm{x})$ in dollars to produce $x$ bags of microwave popcorn. They estimate the cost to produce 10,000 bags as $\$ 5250$ and the cost to produce 15,000 bags as $\$ 7530$ . Find the marginal cost of the bags of microwave popcorn to be produced in this plant.

A) $\$ 45.6$
B) $\$ 4.56$
C) $\$ 2280$
D) $\$ 0.456$