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Question: shellys preferences are described by the utility function whereasmarthas are...

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Shellys preferences are described by the utility function whereasMarthas are described by where y > 0 is a parameter. (a) Shelly and Martha ћave the same preference ordering if: whenever Shelly prefers consumption bundle A - (xA,ya) to bundle B - (XB. Ув), Martha also prefers A to B. Prove that Shelly and Martha have the same preference ordering (b) In what sense do Shelley and Martha have different preferences? (c) What are Shelly and Marthas marginal utilities for x and y? (d) What are Shelly and Marthas marginal rates of substitution? Are these MRSzys consistent with your answer to (a)?

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