fucson Machinery, Incorporated, manufactures numerically controlled machines. which sell for an average price of $15.0 million each. Sales for these NCMs for the past two years were as follows: Use Exhibit 310 . a. Find the equation of a simple linear regression line using Excel. (Round your onswers to 3 decimal places.) b. Compute trend and seasonal factor from a linear regression line obtalned with Excel. (Do not round intermediote coleulations. Round your answers to 3 decimal places.) c. Forecast sales for next year using the above seasonal factors. (Do not round intermediate calculations. Round your answers to 2 . decimal ploces.)