Final answer:
The formula for the area of the given rectangle is 3x^2 - 6x.
Step-by-step explanation:
The formula for the area of a rectangle is given by multiplying the length and the width of the rectangle. In this case, the length is 3x and the width is x - 2. So, the area formula can be written as:
Area = length × width
Substituting the given values:
Area = 3x × (x - 2)
Expanding the expression:
Area = 3x^2 - 6x