Let's analyze the given expression step by step: \( 3x + 2(x+2) + 4 \).
1. First Term:
- The first term in the expression is \( 3x \).
- Here, 3 is the coefficient of \( x \).
2. Second Term:
- The second term is \( 2(x + 2) \).
- In this term, \( (x + 2) \) is the expression inside the parentheses.
3. Last Term:
- The last term in the expression is \( 4 \).
- This is a constant because it does not contain a variable.
Therefore, the correct selections for the given statements are:
1. In the first term, 3 is the coefficient.
2. In the second term, \( (x+2) \) is the expression.
3. In the last term, 4 is a constant.