Bar models are used to illustrate products and quotients
The equation modeled by the bar is 
<h3>How to describe the bar</h3>
The bar is not given.
So, I will use the attached figure to solve the question
From the attached figure, we have the following highlights:
- The length of the bar is 10 units
- Each bar is x unit long
- There are 5 rectangles/squares in the model
So, the equation of the bar is:

Multiply 5 and x

Hence, the equation modeled by the bar is 
Read more about bar models at:
brainly.com/question/929780