1. When the price of a box of herbal tea bags rises from $0.99 to $1.21, the quantity offered for sale rises from 400,000 to 600,000. What is the price elasticity of supply?
2. When the price of wheat rises from $2.34 to $2.46, some farmers switch crops, and the amount of barley offered on the market falls from 101 million bushels to 99 million. What is the cross elasticity of supply?
3. When the wage rate rose from $6.25 and hour to $6.75 and hour, employment in Fastfood, Inc. fell from 5,100 to 4,900. What is the price elasticity of demand for labor?