which expression describes the set of numbers given by the interval:
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Answer:
A
Step-by-step explanation:
Looking at the interval, we can see that this includes all of the numbers coming from negative infinity all the way up to -1.
In other words, the set being described here are all the numbers less than or equal to -1.
Another way to write this is all numbers no more than -1.
Thus, our answer is A.
And we're done!