Express the Set in Interval Notation $( - \infty , - 9 )$

question 63

Multiple Choice

Express the set in interval notation.
-

• A) \(( - \infty , - 9 )\)
• B) \([ - 9 , - 7 ]\)
• C) \(( - 9 , \infty )\)
• D) \(( - 9 , - 7 ]\)