Answer
D)150 ≤ w ≤ 500
Explanation
Let \(w\) be the number of word in Kylie's essay.
We know that the essay has to have a minimum word count of 150, so the length of the essay must be greater or equal than 150 words; remember that in mathematics we say greater or equal with the sign: ≥, so we can express the statement as:
\(w\geq 150\)
Which is equivalent to \(150\leq w\)
We also know that the essay has to have a maximum word count of 500 words, so the length of the essay must be lest or equal than 500 words; remember that we can say the same using the symbol ≤, so we can express the statement as:
\(w\leq 500\)
Now, we can join our tow inequalities in a compounded one:
\(150\leq w\leq 500\)
