Tucson Machinery, Inc, manufactures numerically controlled machines, which sell for an average price of $0.5 million each. Sales for these NCMs for the past two years were as follows: Use: Exhibit 18 10: a. Find the equation of a simple linear regression line using Excel. (Roulid your answers to 3 decimal places.) b. Compute trend and seasonal factor from a linear regression line obtained with Excel. (Do not round intermediate calculations. Round your answers to 3 decimal places.) 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 places.)