How Has the Median Age of First Marriage in the United

question 135

Multiple Choice

How has the median age of first marriage in the United States changed from 1970 to 2009?​

• A) ​It has dropped by about four years.
• B) ​It has remained constant.
• C) ​It has risen by about five years.
• D) ​It has risen by about eight years.

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Patent Expires

The point at which a patent's protection ends, allowing others to make, use, or sell the invention without infringement.

Market Equilibrium

A condition where supply equals demand, and the market price becomes stable.

Competitive Industry

An industry characterized by numerous competitors, where businesses vie for market share by offering unique products, prices, or services.

Market Demand

The overall sum of a particular good or service that consumers in a marketplace are prepared and able to buy across a range of prices.