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Answer 1

Answer:

Normal goods have a positive income elasticity of demand; as incomes rise, more goods are demanded at each price level. ... Inferior goods have a negative income elasticity of demand; as consumers' income rises, they buy fewer inferior goods

Explanation:

Internal economies of scale measure a company's efficiency of production and occur because of factors controlled by its management team. External economies of scale happen because of larger changes within the industry, so when the industry grows, the average costs of business drop.

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