Examlex
The price received by a firm in a perfectly competitive market:
Complementary Goods
Products and services that are used together. When the price of one falls, the demand for the other increases (and conversely).
Income Elasticity
A measure of how much the demand for a good or service changes in response to a change in consumers' income.
Inferior Good
A type of good for which demand decreases as the income of consumers increases, conversely, demand increases when consumer income decreases.
Cross Elasticity
Cross elasticity of demand quantifies how the demand for a good or service is affected by the price change of another related good, reflecting their substitutability or complementarity.
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