Bikes and roller blades are substitutes. Marginal utility theory predicts that when the price of a bike rises, the quantity of bikes demanded

Question

Answer

decreases and a movement occurs down along the demand curve for roller blades.

Answer

increases and the demand curve for roller blades shifts rightward.

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decreases and the demand curve for roller blades shifts rightward.

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decreases and the demand curve for roller blades shifts leftward.

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increases and the demand curve for roller blades shifts leftward.

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