The nations of Pamland and Lillytonia can produce two goods, DVD players and wheat. In a single year, Pamland can produce 150 DVD players or 300 bushels of wheat and Lillytonia can produce 200 DVD players or 600 bushels of wheat. Which of the following deals would Pamland and Lillytonia be willing to accept?

Four key marketing decision variables are price (p), advertising (a), transportation (t), and product quality (q). consumer demand (d) is influenced by these variables. the simplest model for describing demand in terms of these variables is: d = k – pp + aa + tt + qq where k, p, a, t, and q are constants. discuss the assumptions of this model. specifically, how does each variable affect demand? how do the variables influence each other? what limitations might this model have? how can it be improved?