7. You will need the formula for the area of a triangle to answer the next question: Area = (1/2) x base x height. P $100 S2 S1 $60 $50 $20 8 10 Q Based on the graph above, what is the total producer surplus when the market is at its equilibrium, after the shift of the supply curve from S1 to S2? $50 $160 $250 $450 $2,250