Thank you, @SimoneS for replying. Yes, I have looked through all of those settings. I'm not able to find anything regarding enabling the resource previews. I looked through the link you sent and didn't see anything specific. Unless I'm missing something on all of those tabs, there are only 7 settings that can be manipulated. Those are all contained on the "Account Settings" tab and are the following:
Content
Allow Approved Content for
Allow users to share to public account
Allow users to view publicly shared content
Allow content featured by Instructure
Configure default search filters
Standards & Outcomes
Show Common Core Standards