Suppose the demand for X is given by Q_x^d = 100 - 2P_X + 4P_Y + 10M + 2A, where P_X represents the price of good X, P_Y is the price of good Y, M is income and A is the amount of advertising on good X.Good X is

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According to the given demand function, the quantity demanded of good X increases when the price of good Y and income increase, and when the amount of advertising on good X increases. This implies that good X is a normal good since an increase in income leads to an increase in the quantity demanded of good X. A Giffin good is a special case of an inferior good for which the income effect dominates the substitution effect, leading to a positive relationship between the quantity demanded and the price of the good. However, in this case, the negative relationship between the quantity demanded and the price of good X indicates that it is not a Giffin good. Finally, a complement is a good that is consumed together with another good, and there is no information in the demand function suggesting that good X is a complement of another good.

Suppose the Demand for X Is Given by Qxd =

Suppose the Demand for X Is Given by Q_x^d =