110- Price 100 90 8 80 70 60- 50 808 45 40 30- 20 10- American Airines Supply Demand Auburn University Highway 10 20 30 50 60 70 100 110 120 1 150 160 170 Qty Refer to Figure 7-22. If the price decreases from $80 to $70 due to a shift in the supply curve, consumer surplus increases by $250 $750 $1,000 $500