all questions please

Use figure I to answer questions 3 and 4 Figure one individual firm, and market equilibrium for potato production Potato Farmer Market for Potatoes "firm" P and MC MC Average Total Cost P Output Output 3. In the figure one there has been a shift in the market for potatoes. The firm is currently earning .... economic profits but over time market supply will decrease making economic profits .............. A. Zero, Positive B. Zero, Negative C. Negative, Zero D. Positive, Negative 4. In figure one prices will........ over time as firms ........... production. A. Increase, enter B. Increase, Exit C. Decrease, Enter D. Decrease, Exit 5. If herbicide is an input for apple production and the marginal output for apples as a function of herbicide is Marginal output = -0.125x+1, x is the number of units of herbicide used in apple production Selling price of apples is $200/unit Input price of herbicide is $100/unit Calculate how many units of herbicide input would maximize profit A. 4 units of herbicide B. 5 units of herbicide C. 6 units of herbicide D. 7 units of herbicide 6. Hold everything else from question 5 equal, how many units of herbicide would be optimal to use if the selling price of apples increased to $400/unit? A. 4 units of herbicide B. 5 units of herbicide C. 6 units of herbicide D. 7 units of herbicide 7. If the marginal cost of producing an additional unit of oranges is 20+10q and selling price is still $300/unit, how many units of oranges should be produced to maximize firm profit? A. 28 units of oranges B. 30 units of oranges C. 32 units of oranges D. 34 units of oranges 8. Which of the following is not a type of arbitrage. A. Physical Transformation B. Spatial Transformation C. Residual Transformation D. Temporal Transformation