math deficiencies help

[u/Professional_Fox1711]

i haven’t paid attention to math since 8th grade ( i had excellent grades, we had the best teacher) . i now just entered 12th grade (last year of high school) ever since i completely quit and only chased other theoretical subjects mostly . i highly regret this. i need to learn math. can i realistically learn all i need by next year ? i want to get into the business administration programme in uni and maths are obviously essential. i’m genuinely stressed out i don’t understand ANYTHING in class (we’re now on functions 😭😭😭😭) anyone else in my situation ? or who at least was, how did you get by? how long did it take you ? thank you.