To find the equation that represents the number of boxes Trina sold, we know that Yuri sold 14 boxes and together they sold a total of 37 boxes. We can express this relationship with the following equation:
\( n + 14 = 37 \)
where \( n \) is the number of boxes Trina sold.
Now, to find how many boxes Trina sold, we can solve for \( n \):
\[ n + 14 = 37 \ n = 37 - 14 \ n = 23 \]
So, Trina sold 23 boxes.
Thus, the correct response is:
n + 14 = 37; Trina sold 23 boxes.