Hey all I have not been in education since finishing my highschool equivalent of Mechanical Engineering course. So all the maths, terms and everything involved in that I have not done in 5 years and forgotten 98% of it.

My workplace has offered to pay for a sub degree level qualification in Mechanical Engineering but I am nervous I will not be able to keep up with the math side of things.

Would anyone be able to give some advice for me getting back into it?
I recently brought this book in the hopes that I can work through it and it would be enough to refrest my mind.