Find the Domain and Range of the Function $$f ( x ) = - x ^ { 2 } - 8 x - 21$$

question 435

Multiple Choice

Find the domain and range of the function.
- $$f ( x ) = - x ^ { 2 } - 8 x - 21$$

• A) Domain: \(( - \infty , \infty )\); Range: \(( - \infty , 4 ]\)
• B) Domain: \(( - \infty , \infty )\); Range: \(( - \infty , - 5 ]\)
• C) Domain: \(( - \infty , - 5 ]\); Range: \([ 4 , \infty )\)
• D) Domain: \(( - \infty , \infty )\); Range: \([ 5 , \infty )\)

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