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What does the set \{x | x > -4\} represent?\newlineChoices:\newline(A)all numbers less than 4-4 \newline(B)all numbers greater than 4-4 \newline(C)all numbers greater than or equal to 4-4 \newline(D)all numbers less than or equal to 4-4

Full solution

Q. What does the set {xx>4}\{x | x > -4\} represent?\newlineChoices:\newline(A)all numbers less than 4-4 \newline(B)all numbers greater than 4-4 \newline(C)all numbers greater than or equal to 4-4 \newline(D)all numbers less than or equal to 4-4
  1. Set Notation Explanation: The set notation {x | x > -4} is read as "the set of all xx such that xx is greater than 4-4." This means we are looking at all the numbers on the number line that are to the right of 4-4, not including 4-4 itself.
  2. Comparison with Choices: To determine which choice correctly describes the set, we compare the description in the set notation to the descriptions given in the choices. The set notation specifies "greater than 4-4," which means we are looking for a choice that includes all numbers that are to the right of 4-4 on the number line.
  3. Choice (A) Analysis: Choice (A) says "all numbers less than 4-4," which would be to the left of 4-4 on the number line, so this is not correct.
  4. Choice (B) Analysis: Choice (B) says "all numbers greater than 4-4," which matches the description in the set notation, indicating all numbers to the right of 4-4 on the number line. This seems to be the correct choice.
  5. Choice (C) Analysis: Choice (C) says "all numbers greater than or equal to 4-4," which is not correct because the set notation does not include 4-4 itself; it only includes numbers strictly greater than 4-4.
  6. Choice (D) Analysis: Choice (D) says "all numbers less than or equal to 4-4," which is the opposite of what the set notation describes, so this is not correct.

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