Determine the Domain and the Range of the Function $f ( x ) = - x ^ { 2 } - 4 x + 5$

Multiple Choice

Determine the domain and the range of the function.
- $f ( x ) = - x ^ { 2 } - 4 x + 5$

A) domain: {x|x ≤-2}
B) domain: all real numbers range: {y|y ≤9} range: {y|y ≤-9}
C) domain: {x|x ≤-2}.
D) domain: all real numbers range: {y|y ≤-9} range: {y|y ≤9}