Frequent Questions about our Solver
Wouldn't the answer just be x less than or equal to 9?
Answer provided by our tutors
Yes, the answer is "x less than or equal to 9". The solution is showing the answer as "x<=9" and then restating the answer using an interval nomenclature, stating "x is an element of all numbers from negative infinity and up to and including 9". The interval (] indicates a half-closed interval and -infinity is shown as an open interval because it is not a real number.
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