monopoly price discrimination 3 Demand 2 Economics 2 oligopoly 2 Capitalism 1 Consumer surplus 1 Demand analysis 1 Economic systems 1 Economic task 1 Income 1 Linear profit 1 Markets 1 Methods 1 Production 1 Pure competition- economic welfare 1 Supply demand 1 consumer demand theory 1 consumer goods 1 costs 1 economic efficiency 1 equilibrium 1 growth 1 national income 1 oligo policy 1 oligopology 1 price elasticity 1 rent 1 supply 1 unemployment 1