TO = totale omzet/opbrengts = p x q
GO = gemiddelde opbrengst = TO/q
TK = Totale kosten = TVK + TCK
GTK = gemiddelde totale kostem = TK/q
MO = marginale opbrengst
MK = marginale kosten
TW = totale winst = TO - TK
Maximale winst: MO=MK
Break even punt: TO=TK of P=GTK