Applied Calculus
posted by Darlene .
In deciding whether o r not to setup a new manufacturing plant, analysts for a popcorn company have decided that a linear function is a reasonable estimations for the total cost C(x) in dollars to produce x bags of microwave popcorn. They estimate the cost to produce 10000 bags as $5380 and the cost to produce 15000 bags as $7690. Find the marginal cost of the bags of microwave popcorn to be produced in this plant

C(x)=ax+b
a*10000+b=5380
a*15000+b=7690