Write the Quadratic Function $f ( x ) = - x ^ { 2 } + 8 x - 8$

question 158

Multiple Choice

Write the quadratic function $f ( x ) = - x ^ { 2 } + 8 x - 8$ in standard form.

• A) \(f ( x ) = ( x - 8 ) ^ { 2 } - 4\)
• B) \(f ( x ) = ( x - 4 ) ^ { 2 } - 8\)
• C) \(f ( x ) = - ( x + 4 ) ^ { 2 } + 8\)
• D) \(f ( x ) = - ( x + 8 ) ^ { 2 } - 4\)
• E) \(f ( x ) = - ( x - 4 ) ^ { 2 } + 8\)

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Definitions:

Economic Profit

A measure of profitability calculated as the revenue minus all costs, illustrating surplus beyond the break-even point.

Marginal Cost

The change in total cost required to produce an additional unit of output.

Average Total Cost

Total cost divided by the number of units produced. It is sometimes called per-unit cost.

Long Run

A time period long enough to allow the firm to vary all of its factors of production.