Final answer:
The Buchanans project an unstable image of luxury and elegance.
Step-by-step explanation:
The inference that can be made about the Buchanans based on this excerpt is that they project an image of luxury and elegance that is unstable, just like the wind blowing through the room. The description of the windows being ajar and the breeze blowing through the room symbolize the fragile and fleeting nature of their facade. This suggests that their appearance of wealth and refinement may not be as solid and genuine as it initially seems.
Learn more about The portrayal of the Buchanans in the excerpt from The Great Gatsby