Mistakes in study.com lessons/quizzes

[roazbear]

Do any of you notice this? Some of them are really obvious (to me), but others I'm pulling my hair out trying to figure out just what in the heck they are doing/talking about so I go out to the internet looking for calculators and other information and it seems like study.com is wrong. It's especially frustrating with the math things because they put the proper formula right there in the lesson then on the quiz they do some other kind of weird calculation that doesn't produce the same answer as the formula (or as the calculators for the same thing out on the internet). I think they need some auditors/editors to check their lessons. I question just how much of what I'm learning there is actually wrong? 

I'm glad I'm not the only one finding errors. I do keep wondering "what am I not getting?"  My problem is with English Composition CLEP.  I am having a great deal of trouble learning all the rules for citations - MLA, APA & CMS. I know it is important to use many different sources for studying so I've been checking all of my answers in style manuals and other websites.  What I am wondering are these Instacert "actual questions" (along with the incorrect answers) that might be on the "actual CLEP test", or should I go with what I am learning from the other sources.  Honestly, after I pass these tests I will never ever have to write anything in the APA style.  I don't really care if I learn it I just want to pass the test.  I've flagged the questions/answers I thought were wrong but I don't know if anyone is following up.  On a more positive note: I just passed American Lit CLEP with a 64 - I will be pleased to not remember the difference between Edward Taylor and Jonathan Edwards ever again.