FIRST CALCULATE THE VARIABLES OF THE EQUATION 1-linear regression model how will be the orders by week 7 ??, data of the previous 4 weeks are represented in the following table? Week 1 2 3 4 3 4 3 10 Sales with millions x=10 v=20 Sxy=60 ^2-30 Averagex=2.5.... average y = 5 SECOND : STATE THE REASON WHY ACCOUNTANTS USE THIS THIS METHOD TO FORCAST