A reputable company makes a miniature product. Over a period of 8 years, the costs associated with a product line were as follows: initial cost $ 35,000 and costs $ 23,000 per year. The annual income was $ 32,000, and the used equipment sold for $ 9,000. What rate of performance obtained by the company for this product? a) Perform the procedure to clear the factor that helps you determine which rate will be used for the first trial. b) Perform the tests and interpolation to obtain the rate.