plz solve all question its one question

Question 3 Given are the Sales value (in Millions) of Al Hosni LLC: Year 2015 2016 2017 2018 2019 Not yet answered Marked out of 4.00 P Flag question Sales (in Million) 9 11 13 14 17 Using Least Square Method, Compute the following requirements: 1. Find out the value of Sy and Exy 64:8 8; 142 64: 10 None of these 2. Calculate the value of a and b. 2. Calculate the value of a and b. 6.4; 0.8 None of these 12.8; 0.8 What is the trend value for the 12.8; 1.9 3 3. What is the trend value for the year 2016 > y=10.9 None of these y=11.2 What is the trend value for the year 2017 y=12 4. What is the trend value for the year 2017 1 None of these y=12 y= 12.8 y=-12.8