marginalproductof laborinelasticsupplymarketsupplyschedulesubsidytotalcostelasticsupplyvariablecostlaw ofsupplyoperatingcostexcisetaxlaw ofdemandmarginalrevenuemarginalcostsupplyschedulevariablemarginalrevenuediminishingmarginalreturnssupplycurveshortagequantitysuppliedregulationsurplusincreasingmarginalreturnsfixedcostmarginalproductof laborinelasticsupplymarketsupplyschedulesubsidytotalcostelasticsupplyvariablecostlaw ofsupplyoperatingcostexcisetaxlaw ofdemandmarginalrevenuemarginalcostsupplyschedulevariablemarginalrevenuediminishingmarginalreturnssupplycurveshortagequantitysuppliedregulationsurplusincreasingmarginalreturnsfixedcost