Hi Emily,
Yes, it is possible to remove the Yext logo at the bottom of the results page by commenting out that partial on every page you want to remove it for (check the pages folder and edit the .html.hbs file for every universal and vertical page). In the screenshot below, comment out line 31.
We recommend keeping the Yext logo here to showcase it is a Yext-built Answers experience that provides brand-verified results. Since the Answers experience is added to the client’s search results page, their logo can be included in the header and footer there instead. However if you are looking to replace the image, you can follow Micaela’s instructions in this post to upload an image to the assets folder and then override the theme to reference the uploaded image.