Suppose that there is a large price increase for all types of salad dressing. What would you expect to happen to the demand for lettuce? Explain your answer using the term "cross price elasticity of demand".

Suppose the price elasticity of demand for coke is −3 and the cross-price elasticity of demand between coke and the price of Pepsi is 2.2. If the price of Pepsi decreases by 5%, what would happen to the demand for coke and what would have to happen to the price of coke to exactly offset the fall in the price of Pepsi and leave the quantity demanded of coke unchanged, respectively?

Netflix raises the price of its service from $11 per month to $14 per month. This causes the number of people subscribing to HCCCtinder – a school-specific dating app – to rise from 2,200 to 2,500. What is the cross-price elasticity of demand? Based upon your answer, are Netflix and HCCCtinder substitutes or compliments?

The quantity demanded for product A increases 8% when the price of product B increases 16% and the other variables remain the same. Calculate the cross elasticity of demand. Products A and B, are they complementary or substitutes? Why? By drawing a graph, show the change in the demand curve for product A as a result of the change in the price of product B.