Price (dollars per pizza) a b D1 D D2 Quantity (millions of pizzas per year) 27) In the above figure, the movement from point a to point b reflects A) a decrease in the price of pizza. B) an increase in the demand for pizza. C) an increase in the number of people who eat pizza. D) an increase in the price of the tomato sauce used to produce pizza. E) a decrease in the number of firms producing pizza. 28) In the above figure, the shift in the demand curve from D to D1 can be the result of A) an increase in the price of pizza. B) an increase in the price of a sub sandwich, a substitute for pizza. C) an increase in the price of soda, a complement to pizza. D) a change in quantity demanded. E) a decrease in income if pizza is a normal good. 29) In the above figure, the shift in the demand curve from D to D2 can be the result of A) an increase in income if pizza is a normal good. B) an increase in the price of a sub sandwich, a substitute for pizza. C) an increase in the price of soda, a complement to pizza. D) a change in quantity demanded. E) a decrease in the supply of pizza that raises the price of pizza.
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