3 20 Average starting salaries for students using a placement service at a university have been steadily increasing. A study of the last four graduating classes indicates the following average salaries: $32,980 ; $ 39,383 : $ 29,315; and $ 26,577 (last graduating class) Predict the starting salary for the next graduating class using a simple exponential smoothing model with a = 0.24. Assume that the initial forecast was $ 32.980 (50 that the forecast and the actual were the same)