Which of the following is not an inequality?
2 answers:
<h3>Answer: 18x + 9y (choice C)</h3>
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Explanation:
An inequality must have one of the four symbols
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which are "less than", "greater than", "less than or equal to", and "greater than or equal to" in that exact order. Choices A, B and D have one of these symbols which makes them inequalities. We can cross them off the list. Choice C does not have any of the four symbols mentioned, so it's not an inequality. Instead, choice C is a mathematical expression, or we can say "expression" for shorthand.
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