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What happens to the value of the expression n+15 as n decreases? Choose 1 answer: A It increases. (B) It decreases. (C) It stays the same.

What happens to the value of the expression n+15 n+15 as n n decreases?\newlineChoose 11 answer:\newline(A) It increases.\newline(B) It decreases.\newline(C) It stays the same.

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Full solution

Q. What happens to the value of the expression n+15 n+15 as n n decreases?\newlineChoose 11 answer:\newline(A) It increases.\newline(B) It decreases.\newline(C) It stays the same.
  1. Consider Expression Change: Let's consider the expression n+15n + 15. If nn decreases, we are essentially subtracting a certain amount from nn. Since 1515 is a constant and does not change, the only variable part of the expression is nn. When nn decreases, the whole value of the expression n+15n + 15 must also decrease because we are adding a smaller number to 1515.
  2. Illustrative Example: To illustrate this with an example, if nn decreases from 1010 to 55, the expression changes as follows: \newlineFor n=10n = 10, the expression n+15n + 15 equals 10+15=2510 + 15 = 25.\newlineFor n=5n = 5, the expression n+15n + 15 equals 5+15=205 + 15 = 20.\newlineWe can see that as nn decreased by 55, the value of the expression also decreased by 55.
  3. Correct Answer Explanation: Therefore, the correct answer to the question is that the value of the expression n+15n + 15 decreases as nn decreases. This corresponds to option (B) It decreases.

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