very urgent, please

inestion 8 A least-squares multiple linear regression model was t on 4D observations. The resulting regression equation is given by y=28+19x1+13x238x3 Calculate the percent of variance in y explained by x1 and x2 and x3 together. gm F-statistic Regression I I Residual r Total EL III 4.7863% III 2.373992: III 14.35% III 59.093295 III 2.012%