What happens What is the marginal product of labor (MP or MPP)? Why is the curve shaped the way it is? Explain and describe each of the four production relationships. Indicate whether each of the following are long-run or short-run choices. Explain why. A law partnership signs a 5 year lease for an office complex. A jeans company asks its assembly-line workers to work an extra shift this week. A local oil refinery plans a complete restructuring of its production process, including relocating the plant. The local college decides to offer an extra section of micro-economics this summer. A farmer increases the quantity of water applied to his fields. The university hires a new football coach on a three year contract. The corner hot dog vender decides to buy an additional cart. In what two ways can "returns to scale" be used. Give an example of each way.to the difference between average total cost and average variable cost as a firm's output expands? Explain. How would each of the following affect average total cost (ATC), average variable cost (AVC) and marginal cost? an increase in the cost of the lease of the firm's building a reduction in the price of