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.
Cross-price elasticity = percentage change in quantity demanded of good X (at given price) / percentage change in price of good Y. SUV sales dropped 1 percent while gasoline price went up by 6 percent; therefore, Ex = -1%/6% = -0.17. These two goods are complementary goods as evidenced by the negative sign associated with the cross-price elasticity.