JM Computer Services assembles customized personal computers from generic parts. The company was formed by two part-time Barton students, John and Mary, and operates mostly at night, using other part-time students for labor. As John and Mary buy parts in volume at discount from a variety of sources whenever they see a good deal, it is important that accurate forecasts of demand be developed so that they know how many components to purchase and stock. Data on the demand for JM's computers have been accumulated for 12 months and are shown in the following table: II 3 (1) Find the trend line (Trend line equation). What is the value of slope (1) and intercept ( 0) ? (2) Apply the method of trend line to predict how many computers will be needed in each of the coming two months ( t=13 and t=14)