Write interval notion for the set

{x -1 G.T. X G.T. -9}

multiple choose
A)[-9,-1)
B)(-9,-1)
C) (-9,-1]
D) [-9,-1]

To write the interval notation for the set {x | x > -1 and x > -9}, we can simplify the condition by taking the maximum value of the two inequalities.

The inequality x > -1 represents all values greater than -1, and the inequality x > -9 represents all values greater than -9. Since we are looking for values that satisfy both conditions, we can take the maximum of the two values.

The maximum value between -1 and -9 is -1. Therefore, the set can be expressed as {x | x > -1}.

To write this in interval notation, we use parentheses for an open interval and specify the direction of the interval with an arrow. So the interval notation for the set is (-1, ∞).

Therefore, the correct answer is A) [-9,-1).