The correct equation that represents the number of boxes Trina sold is:
\( n + 14 = 37 \)
To find out how many boxes Trina sold, we can solve the equation:
- Subtract 14 from both sides: \[ n + 14 - 14 = 37 - 14 \] \[ n = 23 \]
Therefore, Trina sold 23 boxes.
So the final answer is: n + 14 = 37; Trina sold 23 boxes.