Variables of a Certain Type Are Called Cepheid Variable Because

question 6

Multiple Choice

Variables of a certain type are called Cepheid variable because

• A) the first one discovered was in the constellation of Cepheus.
• B) they were discovered by Anna Marie Cepheid and her brother Raul.
• C) they all lie in the Cepheus star cluster.
• D) they can be used to determine the distance to Cepheid star clusters.
• E) they can be used to determine the distance to all of the stars in the Cepheid galaxy.

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Definitions:

Elastic

Refers to the responsiveness of the demand or supply of a good or service to changes in its price.

Demand Curve

A graphical representation showing the relationship between the price of a good and the quantity of that good consumers are willing and able to purchase at various prices.

Total Revenue

The entire amount of income generated by the sale of goods or services.

Marginal Revenue

Marginal Revenue is the additional income generated from selling one more unit of a good or service.