To solve the inequality \( 2m < 14 \), we first divide both sides by 2:
\[ m < 7 \]
Now we want to express this in set notation. The correct way to write the solution set is:
\[ { m : m < 7 } \]
This means "the set of all \( m \) such that \( m \) is less than 7."
Now, reviewing the options provided:
- Option #1: {m : m < 7} (Correct)
- Option #2: {7 : 7 < m} (Incorrect)
- Option #3: {m < 7 : m} (Incorrect)
- Option #4: {m < 7} (Incorrect)
The only option that correctly states the values that make the inequality true in set notation is:
Option #1: {m : m < 7}
So, the answer is Option #1.