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Suppose the demand for gourmet coffee can be represented by a linear demand curv
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【題目】 Suppose the demand for gourmet coffee can be represented by a linear demand curve. When income rises cause the demand curve for gourmet coffee shift to the right parallelly:
becomes more elastic at the price that prevailed before the change in income
becomes less elastic at the price that prevailed before the change in income
becomes more elastic at every price
becomes less elastic at every price
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