the state college spikes baseball stadium's concession stands previously sold hot dogs for $5 each. at that price, when joey went to watch a baseball game, he bought 2 hot dogs. but now that the stadium has a special night where hot dogs are just $2, joey has purchased 4 hot dogs. using the percent change formula for elasticity, what is the value of joey’s price elasticity of demand for hot dogs? (you’ll have to use the percent change formula).
