INFJs tend to see helping others as their purpose in life, but while people with this personality type can be found engaging rescue efforts and doing charity work, their real passion is to get to the heart of the issue so that people need not be rescued at all.
Cross elasticity of demand Cross elasticity of demand (XED) is the responsiveness of demand for one product to a change in the price of another product. Many products are related, and XED indicates just how they are related.
Revenue and fuel price elasticity . Overviews of price elasticity: Price elasticity of demand . From Wikipedia . In economics and business studies, the price elasticity of demand (PED) is an elasticity that measures the nature and degree of the relationship between changes in quantity demanded of a good and changes in its price. http://en.wikipedia.org/wiki/Price_elasticity_of_demand . Look at These Prices!: Let's Stretch: Elasticity of Demand