英语的微观经济题~

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.