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Use absolute value and inequality notations to describe the following situations. You may use "`|`" for absolute
value sign; ` < = ` for `\leq` and ` > = ` for `\geq`. e.g. you may use "`|x| \ > = \ 5`" for
"`|x|\geq5`".
The distance between `x` and `21` is no more than `21`
The distance between `x` and `- 12` is at least `4`
`x` is at least `12` units from `0`
`x` is at most `21` units from `0`
The distance between `x` and `21` is no more than `21`
The distance between `x` and `- 12` is at least `4`
`x` is at least `12` units from `0`
`x` is at most `21` units from `0`
Box 1: Enter your answer as letters. Examples: A B C, linear, a cat
|x-21| <= 21
Box 2: Enter your answer as letters. Examples: A B C, linear, a cat
|x+12| >= 4
Box 3: Enter your answer as letters. Examples: A B C, linear, a cat
|x| >= 12
Box 4: Enter your answer as letters. Examples: A B C, linear, a cat
|x| <= 21