Find the Domain Of $f ( x ) = \frac { x ^ { 2 } - 25 } { x ^ { 2 } + 3 x - 40 }$

question 241

Multiple Choice

Find the domain of $f ( x ) = \frac { x ^ { 2 } - 25 } { x ^ { 2 } + 3 x - 40 }$ .

• A)all real numbers
• B)all real numbers except x = -8
• C)all real numbers except x = 5 and x = -8
• D)all real numbers except x = 8 and x = -5
• E)all real numbers except x = -5, x = 5 and x = -8

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Definitions:

Nucleolus

Somewhat rounded, dense, well-defined nuclear body with no surrounding membrane; contains ribosomal RNA and protein. Plural: Nucleoli.

Endoplasmic Reticulum

An organelle in eukaryotic cells that plays a key role in protein and lipid synthesis and transport.

Nuclear Envelope

Double membrane structure surrounding and enclosing the nucleus.

Chromosomes

Structures made of DNA and protein that contain the genes and are found in the nucleus of eukaryotic cells.