[Nfb-science] Math assistance online resources pre-calculus and college algebra specifically

[Mariya Vasileva]

Hi all, I was wondering if any of you knew if you online accessible resources that I can use to input math problems and their answers and get the correct answer if the problem is incorrect with an explanation as to why and how? I spent all week finding and using a couple of sources, but they are not as accessible or helpful as I thought they would be. Thanks.

Sent from my iPhone