When the Price of Running Shoes Goes from $100 to $80

question 18

Multiple Choice

When the price of running shoes goes from $100 to $80, the quantity demanded increases from 20 to 30 million. Over this price range, the absolute value of the price elasticity of demand is

• A) 0.55.
• B) 1.
• C) 1.25.
• D) 1.80.
• E) 2.50.

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Definitions:

Root Hair

An extension, or outgrowth, of a root epidermal cell. Root hairs increase the absorptive capacity of roots.

Endodermal Cell

An endodermal cell is a type of cell originating from the innermost layer of the early embryo, contributing to the formation of the lining of the digestive and respiratory systems.

Stele

The cylinder in the center of roots and stems that contains the vascular tissue; also called vascular cylinder.

Pericycle

A layer of cells found just inside the endodermis in plant roots, involved in the formation of lateral roots and secondary growth.