Answer:
A variable model refers to the use of variables to represent unknown quantities or values in equations, expressions, and mathematical relationships. Variables are symbols (usually letters) that can stand for any value, allowing us to generalize and work with different scenarios and situations without specifying exact numbers.
Explanation:
For example, consider the problem of finding the area of a rectangle. Let's say the length of the rectangle is "L" and the width is "W." The area "A" can be represented using variables as:
A = L * W
Here, "A," "L," and "W" are variables representing the area, length, and width, respectively. By using variables, we can work with the general formula and then substitute specific values when needed.