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Unformatted text preview: jeans by using the method of row operations on the augmented matrix of coeFcients to derive the echelon matrix . Demand ( GuessJeans ) : Q guess = 18 - 4P guess-P lee Supply ( GuessJeans ) : Q guess = 9 + P guess + P lee Demand ( LeeJeans ) : Q lee = 14 - 4 P guess-3 P lee Supply ( LeeJeans ) : Q lee =-4 + 4 P guess + 2 P lee Q4. Three truck drivers went into a convenience store. One truck driver purchased four pork dumplings, a cup of coFee and ten mu±ns for $84.5. Another driver purchased three pork dumplings, a cup of coFee and seven mu±ns for $63. What did the third truck driver pay for a pork dumpling, a cup of coFee and a mu±n?...
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This note was uploaded on 02/22/2009 for the course ECONOMICS 4313 taught by Professor Tsui during the Spring '09 term at HKU.
- Spring '09