Determine the Domain and the Range of the Function $$f ( x ) = - 4 x ^ { 2 } - 2 x - 8$$

question 68

Multiple Choice

Determine the domain and the range of the function.
- $$f ( x ) = - 4 x ^ { 2 } - 2 x - 8$$

• A) domain: all real numbers
• range: \(\left\{ y \mid y \leq - \frac { 31 } { 4 } \right\}\)
• B) domain: all real numbers
• range: \(\left\{ \mathrm { y } \mid \mathrm { y } \leq \frac { 31 } { 4 } \right\}\)
• C) domain: all real numbers
• range: \(\left\{ y \mid y \geq - \frac { 31 } { 4 } \right\}\)
• D) domain: all real numbers
• range: \(\left\{ y \mid y \geq \frac { 31 } { 4 } \right\}\)

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