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AP ECON
EXTRA PRACTICE FOR S & d with answers
1- create a supply and demand graphs
2- determine which curves would shift
3- determine how price and quantity are affected
A-market: gasoline; situation-2 oil supertankers collide
Supply decreases—less “sellers” as oil is spilled and not in market
Equilibrium price goes up and quantity decreases
b-market: taxi service transportation situation: local subway workers go on strike
substitute products; increased demand for taxi service so
demand increases so equilibrium price and quantity increase
c-market: bike helmets situation: price of bicycles goes down
helmets & bikes are complements; if price of bikes declines, the quantity demanded of bikes rises
so you need more helmets to go with your bikes
increased equilibrium price and increased quantity
d-market-Oreo cookies situation: the price of milk increases
people buy less milk (decreased quantity demanded) so demand less cookies to go with (complements)
decreased equilibrium price and quantity
e-market: hot dog buns situation: the price of flour rises and the surgeon general tells the US that hot
dogs are “good eats”
flour is a resource for suppliers—if flour is more expensive, decrease supply
increased demand because of tastes & preferences for hot dogs increased—need buns for your hot dogs
increased equilibrium price and undecided equilibrium quantity because shifts are opposite.