Please solve it using handwriting not using software

Please solve Q9 only

7. Given the following data: t 1 2 3 4 5 6 x(t) 5 4 7 8 7 10 Predict X(t) for periods 7 and 8 using five-period moving average and linear regression model. Which resulting prediction will you recommend for use in this case and why? 8. Show quantitatively that the estimate you obtain from the basic exponential smoothing equation is a function of all previous observations; however, the most recent ones are heavily weighted than the far-distant ones. 9. Use a linear model and exponential smoothing to predict the values of x(t) for periods 7, 8, and 10 for the data in Exercise 7