关于marginalutility和demandcurve!
1.ThemarketdemandforhotdogisD=50-5P,(P=price,D=quantitydemanded).Whatisthemarginalutilityofthe12thhotdog?
What'sthetotalutilityofthefirst12hotdogs?
2.Whatisthemarginalcostofthe12thhotdogifthesupplyequationisS=1.1*P?