Find the Domain of the Rational Expression $f ( x ) = \frac { 4 x } { - 7 - x }$

question 323

Multiple Choice

Find the domain of the rational expression.
- $f ( x ) = \frac { 4 x } { - 7 - x }$

• A) \(\{ x \mid x\) is a real number and \(x \neq 0 \}\)
• B) \(\{ x \mid x\) is a real number and \(x \neq - 7 \}\)
• C) \(\{ x \mid x\) is a real number and \(x \neq 0 , x \neq 7 \}\)
• D) \(\{ x \mid x\) is a real number and \(x \neq 7 \}\)

Comprehend the role and minimum points of average total cost (ATC) and average variable cost (AVC) curves in a firm's production decisions.

Identify the condition under which a firm should continue to operate or shut down in the short run based on price and cost analysis.

Understand the role of marginal cost in determining a perfectly competitive firm's short-run supply curve.

Recognize the short-run economic outcomes for a firm in a perfectly competitive market, including earning zero economic profit, making a loss, or earning a profit.

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Definitions:

Development

Process by which the first cell of a multicelled organism gives rise to an adult.

Gastrulation

Animal developmental process by which cell movements produce a three-layered gastrula.

Blastula

Hollow ball of cells that forms as a result of cleavage.

Zygote

Diploid cell that forms when two gametes fuse; the first cell of a new individual.