A firm is producing two goods (X and Y)that are related in consumption.The demand function for X is: $$Q _ { d } = 120 - 4 P _ { x } - 10 P _ { y }$$ Which of the following pairs of goods might the firm be producing?
A)cars and gasoline
B)cola and caffeine-free coke
C)newspapers and tennis balls
D)bran cereal and sugar-frosted corn flakes
E)both b and d

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The Answer of A firm is producing two goods (X and Y)that are related in consumption.The demand function for X is: $$Q _ { d } = 120 - 4 P _ { x } - 10 P _ { y }$$ Which of the following pairs of goods might the firm be producing?
A)cars and gasoline
B)cola and caffeine-free coke
C)newspapers and tennis balls
D)bran cereal and sugar-frosted corn flakes
E)both b and d

A Firm Is Producing Two Goods (X and Y)that Are Qd=120−4Px−10PyQ _ { d } = 120 - 4 P _ { x } - 10 P _ { y }Qd​=120−4Px​−10Py​

A Firm Is Producing Two Goods (X and Y)that Are $Q _ { d } = 120 - 4 P _ { x } - 10 P _ { y }$