Specify the Domain Of $( g \circ f ) ( x )$

question 65

Multiple Choice

Specify the domain of $( g \circ f ) ( x )$ for the pair of functions $f ( x ) = \sqrt { x + 9 } \text { and } g ( x ) = 5 x + 9$

• A) \(( - \infty , 9 ]\)
• B) \([ 0 , \infty )\)
• C) \(( - \infty , \infty )\)
• D) \([ - 9 , \infty )\)

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Definitions:

Cholesterol

A type of lipid found in the blood that is essential for building cells but can lead to heart disease if levels are too high.

Hydroxyl Group

The hydroxyl group consists of an oxygen atom bonded to a hydrogen atom (-OH), commonly found in alcohols and responsible for their polar properties.

Peripheral Proteins

Proteins that are attached to the surface of the membrane and are not embedded within the lipid bilayer, playing roles in cell signaling and structure.

Covalent Disulfide Bonds

Strong chemical bonds formed between two sulfur atoms within or between polypeptide chains, important for the stability and folding of proteins.