To solve the inequality \( 2|x+4| \geq 14 \), we first divide both sides by 2:
\[ |x+4| \geq 7 \]
This absolute value inequality means that either:
- \( x + 4 \geq 7 \)
- \( x + 4 \leq -7 \)
Now we will solve each case separately:
Case 1:
\[ x + 4 \geq 7 \]
Subtracting 4 from both sides gives:
\[ x \geq 3 \]
Case 2:
\[ x + 4 \leq -7 \]
Subtracting 4 from both sides gives:
\[ x \leq -11 \]
Now we combine the two parts of the solution. The solution set can be written in interval notation as:
\[ (-\infty, -11] \cup [3, \infty) \]
Thus, the solution to the absolute value inequality \( 2|x+4| \geq 14 \) is:
\[ \boxed{(-\infty, -11] \cup [3, \infty)} \]