Honestly, I have never taken a single algebra class in college. For my other degree (not exactly math or science related) I had to do a lot of math for astronomy, chemistry, 2 statistics classes, and somewhat for 2 research classes..and microeconomics...maybe others I am forgetting...the biology courses I have taken or am taking now have some basic math (i.e. measurements).
I'm not a nursing student yet, so no clue how much is needed in nursing school. I have always been decent at math, but never considered myself GREAT at it. What helped me a lot was literally just googling and practicing equations on my own. Something about finding the answers myself boosted my confidence and helped me remember it. Also, for one of my classes the professor provided the answers to the homework before it was due...and that helped a ton! Because I knew instantly if I did something wrong, and I could work on it until I knew exactly how to do it. I would definitely consider myself good at math now!
I think a lot of people don't give themselves enough credit for what they are capable of learning! You CAN be good at math! Good luck!