Which of the following is not an equivalent form of the compound inequality
x + 18 less than or equal to 10 and x + 18 greater than or equal to 5
A: A number line with a closed circle on -13, shading to the left, and a closed circle on -8, shading to the right.
B: 10 greater than or equal to x + 18 greater than or equal to 5
C: -13 less than or equal to less than or equal to x -8
D: A number line with a closed circle on -13, a closed circle on -8, and shading in between.
Stacey Warren - Expert brainly.com
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So start by writing it like this: 5 <= x+18 <= 10
This works sort of like a triple equation now. If you add things to one side, you have to add the same amount to each other side. And remember, a number line with an open circle and a line to the right means that you do not include the value that the circle lands on (this implies greater than). A number line with a closed circle and a line to the right means that you DO include the value (this would imply greater than or equal to).