The model of perfect competition can be fruitfully used to analyze markets that don't perfectly fit the description of this market type

Labor unions cause unemployment because the union contract wage is set

A) below the market wage, causing a shortage of labor. B) above the market wage, causing a surplus of labor. C) above the market wage, causing a shortage of labor. D) below the market wage, causing a surplus of labor.

As the price of good A rises, the demand for good B rises. Therefore, goods A and B are

A) normal goods. B) inferior goods. C) substitutes. D) complements. E) none of the above