To find the equation that represents the number of boxes Trina sold, we start with the information given:
Uri sold 14 boxes, and together with Trina, they sold a total of 37 boxes.
This means that the number of boxes Trina sold can be represented by the equation:
\[ \text{Boxes sold by Uri} + \text{Boxes sold by Trina} = \text{Total boxes sold} \]
So we can write:
\[ 14 + n = 37 \]
Where \( n \) is the number of boxes Trina sold.
To solve for \( n \), you would subtract 14 from both sides:
\[ n = 37 - 14 \] \[ n = 23 \]
So, Trina sold 23 boxes.
Looking at the options provided:
- A. \( n + 37 = 14 \) (Incorrect)
- B. \( n - 37 = 14 \) (Incorrect)
- C. \( n + 14 = 37 \) (Correct: this is the equation we derived)
- D. \( n - 14 = 37 \) (Incorrect)
Therefore, the correct answer is C. n + 14 = 37. Trina sold 23 boxes.