1) Suppose a firm is faced with the following decision. A supermarket is trying to decide how many new registers to put into its stores. The cost of each one is $100,000 and the market interest rate is 5%. After some research, the firm concludes that the new, quicker registers will increase business such that the extra business is worth per year: One Register $10,000 2 Registers $18,000 3 Registers $24,000 4 Registers $28,000 5 Registers $30,000 Given this information, how many registers should the firm install? What if the erest rate was 3%, what if the interest rate was 9%? 2) Production Data for Bob's Bicycle Factory are as follows: # of workers Bikes per day 1 10 18 AWN 24 28 30 Other than wages, Bob has costs of $100 per bike (parts, etc ...) for each bike. ven this information, answer the following questions: a) Bikes sell for $130 each. Find the marginal product and value of the marginal product for each worker. b) Show Bob's demand for labor c) What if bikes are selling for $140