Converting jpgs of documents to black & white pdfs

Question

Any help is greatly appreciated!
Long story short - I can provide more details if necessary - I have a collection of jpg files that are pictures of documents - no images - that I had to take to copy them instead of zeroxing them.  I am trying to convert them into pdfs that are:
1.) as black and white as possible so as to make it as close to printing a regular black and white word document as possible (instead of using a lot of printer ink on printing pictures that just happen to be saved in pdf format), and
2.) searchable vis-a-vis OCR.
After a recommendation from a teacher, I purchased Adobe Acrobat a few days ago which I've never used before.  That being said, I can convert them into pdfs, I can make them searchable because I've played around with the OCR and that seems pretty straight forward.
However, no matter how many times I try, no matter how many different preferences/settings/etc. I play around with (as an aside, how the hell do I revert these settings back to default?  I can't remember what they all were beforehand!), I can't get the pdfs to look like anything other than the same jpg image but now saved as a pdf.
I've also been recommended ABBYY FineReader, and I've tried that as well and it seems to do a much better job, unless I'm missing something.
I'd share the documents, but I can't figure out how.
EDIT:  After uploading pdfs to acrobat.com, taking 30 mins to get workspaces to open up, but then not being able to transfer the documents from acrobat.com to workspaces, I finally uploaded them again from my desktop to workspaces - WHY IS THIS SO DIFFICULT?!?!
So my questions basically is this:  How do I get adobe to make files like this:
https://acrobat.com/?d=KJskXucbh2pBBPuZmsL6Hw
look like this:
https://acrobat.com/?d=RrXBupJrVFQBKNT*DdqK5g
This has been a very frustrating day.  Any help is appreciated.

Answer 1

Thanks to everyone who has responded to my questions, but I have decided to return Acrobat Pro and stick with ABBYY FineReader.
Perhaps I'm misunderstanding your responses, but I can't help but feel as if either nobody here is able to see the differences between the two pdfs I link to above, or nobody here believes me when I say that the jpeg file (link above) I used to create the pdf with ABBYY (link above) was the same jpeg file I used to create the pdf  with Acrobat (link above).
Instead, the consensus seems to be that the only way I could have possibly created the kind of perfect-looking black and white (or monochrome or whatever) pdf that I made with ABBYY (as opposed to pdfs Acrobat makes, which look and print exactly like the jpeg images but with various grey filters applied to it) was by using a scanner, a perfectly flat document, and maybe even graphics editing software.
None of these are needed because that isn't the issue here.  I wasn't allowed to use a scanner anyway as is often the case when digitizing documents from a university's library archives. 
The only thing you need to do is not use Acrobat but use ABBYY FineReader 11 instead.  FineReader was not only able to convert the jpegs (despite the fact the jpegs were made not with a scanner but a webcam that was propped above the document) into pdfs that looked like the one above, but did so unbelievable easy - simply by selecting the black and white mode option before the conversion.
Again, I appreciate everyone who took the time to read and respond to my questions, and perhaps in the field of pdf conversion and creation what I'm asking to do isn't often done or in high demand, which may perhaps be why Acrobat can't do it.  Admittedly even on ABBYY's software this black and white mode is a brand new feature.  Nevertheless, the fact that ABBYY's software can do this so easily, even with imperfectly taken jpeg files, AND produce OCR that is more accurate that Acrobat's, all for less than half of Acrobat's cost, I can't help but question why Adobe can't get their feature-laden, labyrinthian software to do this, especially for 450 bucks.
Also, with all due respect, when someone is asking if acrobat can do something with already-existing files (that couldn't be made with a scanner) that a similar software can do with those same files, responding by suggesting that they throw out the files they already made and have to use, go back and recreate new files in a way that was already determined to be unavailable is both unhelpful and a bit frustrating, especially you come off in your suggestions as seeming to ignore or disbelieve that the other standalone software actually did this in the first place.
Thanks again for everyone's time, and I hope this thread is of some use in the future to anyone trying to do what I'm doing now.