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The demand for beer in Japan is given by the following equation: Qd = 700 2P PN + 0. 11, where is P is the price of Beer, PN is the price of nuts, and [is the average consumer income. a) What happens to the demand for beer when the price of nuts goes up? Increases or Decreases? b) In which direction demand curve shifts? Right or Left? c) Are beer and nuts demand substitutes or complements? d) What happens to the demand for beer when average consumer income rises? Increases or Decreases? e) In which direction demand curve shifts? Right or Left