The value of the number from the given statement is required.
The interval notation is \(x\in (-\infty,6],[11,\infty)\)
Let \(x\) be the given number
so, it is decreased by 2
\(x-2\)
It is less than or equal to \(4\)
\(x-2\leq 4\\\Rightarrow x\leq 6\)
Or it is greater than or equal to \(9\)
\(x-2\geq 9\\\Rightarrow x\geq 11\)
The interval notation is \(x\in (-\infty,6],[11,\infty)\)
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