Use the Quadratic Function to Determine If the Function Has $$f ( x ) = - 5 x ^ { 2 } - 10 x$$

Multiple Choice

Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.
- $$f ( x ) = - 5 x ^ { 2 } - 10 x$$

A) minimum at $( 1 , - 5 )$
B) maximum at $( 1 , - 5 )$
C) maximum at $( - 1,5 )$
D) minimum at $( - 1,5 )$