A consumer’s demand function for good 1 is given by: x1(p1, p2, y) = 10 − 2p1 + p2 + 0.5y (a) Is good 2 a gross substitute or complement for good 1? Fully explain. (b) Is good 1 normal, inferior, or neither? Justify your answer. (c) Derive the inverse demand function for good 1. (d) Under what conditions, if any, could good 1 be a Giffen good? Explain your reasoning.