Sketch the following question and answer the rest

2. For each of the ARIMA models below, give the values for E(VY,) and Var(VY,) . a) Y = 3 + Ytter - 0.75et-1. b) Y = 10 + 1.25Y- 0.25Y_2 + er - 0.let-1- c) Y = 5+ 2Yt-1 - 1.7Yt-2 + er - 0.5et-1 + 0.25et-2-1. (3 points) Suppose that g is the function given by the graph below. Use the graph to fill in the blanks in the following sen- tences. g 10 2 As x gets closer and closer to (but stays less than) 1, g(x) gets as close as we want to As x gets closer and closer to (but stays greater than) 1, g(x) gets as close as we want to As x gets closer and closer (but not equal) to 1, does g(x) get as close as we want to a single value? If such a value exists, enter it. If no such value exists, enter DNE. X= Answer(s) submitted: . . (incorrect) 2. (2 points) Sketch the following function and use it to determine the val- ues of a (list in ascending order below) for which lim f(x) does *+a not exist: 2-X if x