Im gonna need a lot of help tonight because i’m failing so please help asap !

What is the inverse of the function f(x)=2x+1

Determine the fraction of total interest owed. after the fourth month of a 12-month loan: the numerator is: {(n + ) + (n + ) + (n + ) + (n + )} = , and the denominator is: {(n) + (n + 1) + + (n + )} = . therefore, the fraction is numerator/denominator (to the nearest tenth) =

Which representation has a constant of variation of -2.5