Use the following 25 consecutive days closing prices for AT&T to determine linear, quadratic, cubic, and quartic

Question:

Use the following 25 consecutive days’ closing prices for AT&T to determine linear, quadratic, cubic, and quartic regression equations. What trends do you see? What are your predictions for the closing price on the 26th trading day? Starting with 1/27 as day 1, 1/28 as day 2, etc., use the ordered pairs (1, 35.48), (2, 35.53). . . in the form (day number, closing price).