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x is equal to or less than -3 means that x is every number from -3 onwards all the way to negative infinity.
For example, -4 would be less than -3, -5 would be less than -4 which is less than -3 and so forth.
So for the final answer, the interval of x that is equal to or less than -3 would be written like this:
(-inf,-3] There is a parenthesis on negative infinity because it is impossible to reach infinity and since x is equal to -3, we put the brackets to indicate that the -3 is included in the interval.
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∙ 14y ago
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