2. Sales of the product that you are producing for the years 2007, 2009, 2011, 2013, 2015, 2017, 2019 have been $55.000 and $78,000 and $86,000 and $83.000 and $95.000 and $100,000 and 110,000 respectively. what sales would you forecast for 2021 using the simple regression (least squares) method? Note: Show all your calculations! (25 pts.)