Choose the true statement about the graph of x - 1 ≤ 2.?
a=open circle on 1 and all numbers to the right shaded
b=closed circle on 1 and all numbers to the left shaded
c=closed circle on 3 and all numbers to the left shaded
d=open circle on 3 and all numbers to the left shaded
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x - 1 ≤ 2
Add 1 to both sides: x ≤ 3
Since you have the "or equal to" part of this, the circle would be closed.
Since x is less than 3, the line would be shaded to the left of 3. (Left of a number is less; right of a number is greater.)
The answer is c=closed circle on 3 and all numbers to the left shaded