Her father is Robert Ellis Silberstein (Jewish). Her mother is Diana Ross (African-American).
If the cross price elasticity is positive, then we call such goods Substitutes (example: pizza and burgers -- you usually consume either or). The income elasticity of demand measures the change in the quantity demanded of some good, when the income changes, holding everything else constant.For example you can measure what happens to the demand for expensive red wine when income increases.f the cross price elasticity is positive, then we call such goods Substitutes (example: pizza and burgers -- you usually consume either or). The income elasticity of demand measures the change in the quantity demanded of some good, when the income changes, holding everything else constant.
Definition: Elastic demand is an economic concept that occurs when the quantity of a product responds intensively to a change in the price of the product. What Does Elastic Demand Mean? What is the definition of elastic demand? According to the law of demand, when the price of a product rises, the quantity demanded declines because people are not willing to spend more money on a particular product.