PLEASE answer the 4 practice questions (6 -9) below based on the graph above it (show work if possible):

Positive Externalities P $50 MSC $45 $40 $35 $30 $25 $20 $15 $10 $5 MPB 1 2 3 5 6 7 8 9 10 Q Use the graph above to answer the following questions:Use the graph above to answer the following questions: 6. Assume that each unit of the good generates $20 of external benefits. Draw a marginal social benefit (MSB) curve and identify the socially optimal price and quantity. IF YOU CAN'T PRINT THIS OUT AND DRAW AND SUBMIT, YOU CAN JUST ANSWER THE QUESTIONS BELOW BUT THEY ARE BASED ON THIS NEW CURVE TO BE DRAWN 7. At the quantity of 6, identify and calculate the area of deadweight loss. 8. Calculate the deadweight loss if the government provides a $30 per unit subsidy to consumers? 9. Assume instead that the government provides a $20 per unit subsidy to consumers? Calculate the deadweight loss