Question 9: Giving the below data, which machine should be selected using i-5% per year A) Using Presnet Worth Analsys B) Using Annual Worth Analsys Machine X First Cost $20,000 operating cost $9,000 per year $5,000 Salvage value Years $35,000 $4,000 per year $7,000 Lombing of money Different nterest Question 6: An industrial engineer made a modification to a chip manufacturing process that will save her company $10,000 per year. At an interest rate of 8% per year, how much will the savings amount to in 7 years