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英语的微观经济题~Janine has spent her food budget on two goods,Pop a

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英语的微观经济题~
Janine has spent her food budget on two goods,Pop and Chips.She has allocated her budget such that the marginal utility of Pop is 9 and Chips is 6,and the prices of Pop is $1.50 and Chips is $1.
1)Is she maximizing her utility?If not,explain how should she reallocate her purchases to maximize her utility?
2)Given the original allocation,if the price of Pop rises to $2.00,how should she reallocate her purchases?
3)Explain whether this is consistent with the law of demand?Show the demand curve.
英语的微观经济题~Janine has spent her food budget on two goods,Pop a
詹宁把食品预算的钱都花在两种商品Pop和Chip上.她是这样安排预算的:Pop的边际效用为9,Chip的边际效用为6,Pop的价格是1.5元,Chop是1元.
1)她的效用最大化了吗?如果没有,请解释怎样重新安排购物才能够使她的效用最大化?
2)在原来的安排结构下,如果Pop的价格涨到2元,她应当如何调整购物计划?
3)请解释这是否遵守了需求定律?划出需求曲线.