Solve the Inequality $$x ^ { 2 } - 9 x \geq 0$$

Multiple Choice

Solve the inequality.
- $$x ^ { 2 } - 9 x \geq 0$$

A) $[ 0,9 ]$
B) $[ - 9,0 ]$
C) $( - \infty , - 9 ]$ or $[ 0 , \infty )$
D) $( - \infty , 0 ]$ or $[ 9 , \infty )$