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.
Cross Price elasticity of demand = % change in quantity of A demanded / % change in price of B What does a positive cross-price elasticity of demand mean? A positive cross-price elasticity of demand means that the two involved goods are substitutes What does a negative cross-price elasticity of demand mean? A negative cross-price elasticity of demand means that the two involved goods are complements. What is the income elasticity of demand? Income elasticity of demand = the % in quantity of a good demanded when a consumer's