It costs $40 to buy a telephone from the department store. Assume that I can keep a telephone for at most four vears and that the estimated maintenance cost 1, $20; year 2, $30; year 3, 540; year 4. 560. I have just purchased a new telephone. Assume that a telephone has no salvage value. Draw the network model that cost each year of operation is as follows: year node 6 for the end of year 5. Determine how to minimize the total cost of purchasing and operating a model that is node 1 for the beginning of year i and telephone for the next five years Algorithm. There will be two alternative ways

Black & White Computing is putting together its R&D budget for the coming year. The firm has compiled a list of potential research and development projects and estimated the interest rate and amount of financial capital required for various levels of R&D spending. The data collected is shown in the table below. Graph Black & White Computing's demand curve for financial capital when the firm receives only the private benefit of investing in R&D. Interest Dprivate (in Dsocial (in Point Rate millions) millions) A 11% $2 $3 B 9% $3 $6 7% $4 $9 D 5% $7 $12 E 3% $10 $15 Provide your answer below: 10 -5- 2) A (5-2) B(10,2) G (15, 2) D(20-2) E 10 20 15 Financial capital (in millions $) Rate of return (%)

A factory ships weekly shipments of an item to a distribution center and the average quantity shipped is 350 units. The weekly ordering rate for this distribution center is 50 units for an item. Unit price is $ 650. The period of supply from the factory to the distribution center is two weeks (2 weeks). The distribution center must pay for the stock from the moment the manufacturer ships the goods. If the distribution center wants to increase the purchase quantity to 400 units, the factory will give priority to the distribution center and guarantee it Supply period (one week only). Required: What is the effect on the average cycle inventory and the pipeline inventory of the distribution center? With the necessity to comment on the results.

Questions 11-17. The environment club has saved 200 pounds of cans and promises to collect 20 pounds of cans each week and will use the profits to buy additional recycling bins. Create a linear model for their collection program. When will the club have 320 pounds of cans?