please help me de the Q4,5,6,7,8,9

4. At the level of output selected in #3, determine the level of price which a monopolist will charge. (1 point) 5. What happens if the rm charges higher than the price selected in #4? Briefly explain. (1 point) 6. From #3, #4, and Table B, calculate its profit. (1 point) 7. In the long run, if other conditions do not change, what would happen to the monopoly firm's profit determined in #6? Increase, decrease, or what? Briefly explain. (1 point) 8. Assuming the market were perfectly competitive, mark the equilibrium point on the diagram drawn in #2, and then determine the equilibrium price and quantity approximately. (1 point) 9. From (#3), (#4), and (#8), can you argue which market consumers would prefer? \f