After seeing a lot of comments here discussing accreditation, I figured it may be beneficial to many readers to know about low cost, more transferrable, options for college credits. I have to stress though, there are lots of a-hole universities so try to find one that is ok with transferring large numbers of credits. You can't get an entire degree from this, but you can get most of the fluff class requirements you don't actually need for your major done.

Ordered based on cost. First 3 are online.

saylor.org - You only pay the fee for online proctoring. Has a list of roughly 20 total lower level courses that are ACE accredited. Self paced.

aleks.com - Like 20 bucks a month and they have some classes at the level of college algebra and precalc ACE accredited.

straighterline.com - Self paced, overall better course quality than saylor. Has professor graded writing assignments sometimes. ACE accredited courses. Normally $60 a class with a $99 a month membership fee. To keep costs down sign up and do as many courses as possible in a month.

The GED - You can get up to 10 college credits by doing well on the GED. Not online sadly, requires a testing center. If you have a non-traditional american high school background you probably need one of these to get into a university anyway.

CLEP exams - Are very cost efficient at $90 each and allow you to "test out" of many lower and higher level classes. Not online, requires. testing center.