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2) (a) State the First Theorem of Welfare Economics. (b) In an exchange economy with two goods, consumer 1 and consumer 2 have utility functions Ul(x) = x1x2 and U2(x) = 2142 and initial endowments wl = (3, 4) and w2 = (6, 2), respectively. Is the initial endowment a Pareto efficient allocation? Justify your answer. Construct a Walrasian equilibrium for this economy