At Games Galore 3 games cost $18 Agames arrest you can buy four games for $20 deal in the charts and graphs the order of pairs use the same graph for both use different colors for each line if possibl

At Games Galore 3 games cost $18 Agames arrest you can buy four games for $20 deal in the charts and graphs the order of pairs use the same graph for both use different colors for each line if possible number of games that cost the number of games in the cost based on the charts and graph which stores have better deal and how did you know cuz somebody please give me the numbers and tell me how they got them and show me on paper