Question

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Explanation:

Step1: Substitute -4 for x

We know we need to substitute \( x = -4 \) into the inequality \( x + 3 \leq -1 \). So replacing \( x \) with \( -4 \), we get \( -4 + 3 \leq -1 \).

Step2: Simplify the left - hand side

Calculate \( -4+3 \), which equals \( -1 \). So the inequality becomes \( -1\leq - 1 \), which is true. And the value we substitute for \( x \) is \( -4 \), so the "?" should be replaced with \( -4 \).

Answer:

\( -4 \)