Algebra Math Help

Is there a website that helps you learn math formulas?

I need help with basic and advanced algebra. I’m serious, I haven’t done math since the 8th grade. I got “lucky” and had Coaches for teachers. Or so I thought I was lucky. I’m about to take the accuplacer test for college and I don’t want to be stuck in remedial classes. I want to learn everything and anything I can so I can increase my chances of passing. Thanks so much.
Or if you are super good at math and have some spare time I will give you my IM name if you are interested in crash course tutoring. I need help with percentages, word problems, fractions and decimals.

See if you can find what you needed.

3_7a Recursive Formulas for Arithmetic Sequences