The Graph Shown Depicts the Market for a Good

question 137

Multiple Choice

The graph shown depicts the market for a good. At a price of $15, there is:

• A) a shortage (excess demand) of 10 units.
• B) a shortage (excess demand) of 20 units.
• C) a shortage (excess demand) of 30 units.
• D) a surplus (excess supply) of 20 units.

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Definitions:

Cleavage

The tendency of a mineral to break along flat surfaces as determined by the mineral's crystal structure.

Silicate Mineral

Minerals that contain silicon and oxygen, and sometimes other elements, which make up the majority of the Earth's crust.

Known Minerals

Refers to substances with a definite chemical composition and crystalline structure that have been identified and cataloged by scientists.

Silicon Tetrahedron

A fundamental structural unit in silicate minerals, consisting of four oxygen atoms symmetrically arranged around a central silicon atom.