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 3.10 LAST YEAR THIS YEAR QUANTITY 16 34 QUANTITY QUARTER (UNITS) QUARTER (UNITS) 21 28 32 16 TV TV a. Find the equation of a simple linear regression line using Excel. (Round 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.) Trend Forecast Seasonal Factors Last Year This Year I c. Forecast sales for next year using the above seasonal factors. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Next Year