In a manufacturing layout, the area of a rectangular component is determined by the product of its dimensions: $(3x - y)$ and $(3x + y)$. Using the Product of Conjugates pattern, which of the following represents the simplified expression for this area?

A facility manager is calculating the required square footage for a new storage warehouse. The floor plan dimensions are modeled by the expressions $(3x - y)$ and $(3x + y)$ in meters. By recalling the product of conjugates pattern, the manager concludes that the expanded expression for the total area is ${}9x^2 + y^2$.

A project coordinator is overseeing the fabrication of custom metal plates with dimensions $(3x - y)$ and $(3x + y)$. To simplify the area calculation using the Product of Conjugates pattern $(a - b)(a + b) = a^2 - b^2$, match each part of the formula to its corresponding value or simplified result for these specific plates.

An architectural drafter is calculating the area of a floor section with dimensions $(3x - y)$ and $(3x + y)$ feet. Arrange the steps in the correct order to simplify this product using the Product of Conjugates pattern.

Area Calculation for Fabricated Metal Plates

An apprentice welder is fabricating a rectangular steel support bracket for a commercial construction project. The blueprint specifies the dimensions of the bracket as $(3x - y)$ inches by $(3x + y)$ inches. To quickly determine the total surface area of the bracket, the welder recalls the Product of Conjugates pattern: $(a - b)(a + b) = a^2 - b^2$. Using this pattern, the simplified expression for the area of the steel bracket is ____ square inches. (Write your answer in simplified form, such as 9x^2 - y^2 or 9x^2-y^2).