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Which number line shows the correct solution to w2+13w-12-31?

Which number line shows the correct solution to w2+13w-12-31?-example-1

1 Answer

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The number line that shows the solution to the inequality is (c)

Which number line shows the solution to the inequality

From the question, we have the following parameters that can be used in our computation:

w² + 13w - 1 ≥ -31

So, we have

w² + 13w + 30 ≥ 0

When expanded, we have

w² + 10w + 3w + 30 ≥ 0

So, we have

(w + 10)(w + 3) ≥ 0

Expand

w + 10 ≥ 0 and w + 3) ≥ 0

Evaluate

w ≥ -10 and w ≥ -3

This gives

-10 ≤ w ≤ -3

The number line that represents this is (c)

User Rex Hardin
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