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.
Demand elasticity is the sensitivity of the demand for a good or service due to a change in another factor. There are many factors that influence a change in demand elasticity. These factors include price, income level and availability of substitutes. One factor that can affect demand elasticity of a good or service is its price level. For example, the change in the price level for a luxury car can cause a substantial change in the quantity demanded.