First: f(2) is same as f(x=2) so all we have to do is to express x=2 in f(x) f(2) = 3*2 + 2 = 8
Second f^(-1) (3) is inverse function. first we solve f(x) for x. let f(x) be equal to some variable m m = (2x -7)/3 3m = 2x - 7 2x = 3m + 7 x = (3m + 7)/3 now we write: f^-1(x) = (3x + 7)/3
x=3 f^-1(3) = 16/3
Third 2y + 14 = 4y - 2 we just solve for y 2y = 16 y = 8
Now we take that f(x) = y because we both write to be the functions of x