Express the Set in Interval Notation $( - 9 , - 7 )$

question 50

Multiple Choice

Express the set in interval notation.

• A) \(( - 9 , - 7 )\)
• B) \([ - 9 , - 7 )\)
• C) \(( - \infty , - 9 )\)
• D) \([ - 9 , - 7 ]\)

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Definitions:

Income Elasticities

Refers to the sensitivity of the demand for a good to changes in the income of the consumers who buy this good.

Normal Goods

Products that see an increase in demand when consumer income grows, and experience a drop in demand as consumer income declines.

Wheat Yields

The quantity of wheat produced per unit of land area.

Total Revenues

The total amount of money generated by a firm from its sales activities before any costs or expenses are subtracted.