TOmework 4 S Score: 0 of 1 pt 15 of 15 (13 complete) HW Score: 84,76%, 12.71 of 15 9.4.3 Question Help The volume (in cubic feet) of a black cherry tree can be modeled by the equation y = -51.3+0.4x, +5.4x2, where x, is the tree's height (in feet) and x, is the tree's diameter (in inches). Use the multiple regression equation to predict the y-values for the values of the independent variables. (a) x1 = 71, x, = 8.9 (b) Xy = 67, X, = 10.5 (c) Xy = 81, X, = 16.7 (d) xy = 92, x, = 20.5 nt (a) The predicted volume is |cubic feet. (Round to one decimal place as needed.) uce ucc la L Enter your answer in the answer box and then click Check Answer. Opt 3 parts remaining