Identify the Center and Radius of the Circle $( x - 2 ) ^ { 2 } + ( y - 7 ) ^ { 2 } = 81$

question 36

Multiple Choice

Identify the center and radius of the circle $( x - 2 ) ^ { 2 } + ( y - 7 ) ^ { 2 } = 81$ .

• A)center: (-7,-2) radius: 9
• B)center: (2,7) radius: 9
• C)center: (2,7) radius: 81
• D)center: (-2,-7) radius: 9
• E)center: (7,2) radius: 81

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Definitions:

Adaptive Value

The extent to which a trait or behavior increases the chances of survival and reproduction of an organism in a specific environment.

Song Competence

The ability of a bird or other vocalizing animal to produce complex or species-specific vocalizations, often related to mating success and territory defense.

Mate Selection

The process through which organisms choose their partners for reproduction, which can influence genetic diversity and evolutionary outcomes.

Song System

A specialized brain network in birds, specifically songbirds, that is involved in the production and learning of songs.