I know that this isn't a question, but this is a tip for other mathematically challenged people like myself:
If you're doing problems out of a textbook, try the Slader app. It lists a lot of textbooks, and provides the answers to problems. Along with the problems and answers, it provides explanations and picture walkthroughs. I use this to check my algebra 1 homework a lot. Be careful though, and don't rely on it completely. It can be wrong.

Question

I know that this isn't a question, but this is a tip for other mathematically challenged people like myself:
If you're doing problems out of a textbook, try the Slader app. It lists a lot of textbooks, and provides the answers to problems. Along with the problems and answers, it provides explanations and picture walkthroughs. I use this to check my algebra 1 homework a lot. Be careful though, and don't rely on it completely. It can be wrong.