Tucson Machinery, Incorporated 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. Note: Round your answers to 3 decimal places. b. Compute trend and seasonal factor from a linear regression line obtained with Excel. Note: Do not round intermediate calculations. Round your answers to 3 decimal places. c. Forecast sales for next year using the above seasonal factors. Note: Do not round intermediate calculations. Round your answers to 2 decimal places