Question

Let f(x) = 2x − 6. Solve f−1(x) when x = 2.

−5
4
−2
7

Answer 1

@mathstudent55

Answer 2

Let f(x) = 9x − 2 and g(x) = −x + 3. Find f(g(x)).

−9x − 2
−9x + 5
−9x + 25
−9x + 27

Answer 3

FOr the first, the inverse is f(x)=x/2+3. Plugging in x=2 gives f-1(2)=4.
For the second, f(g(x))=9(-x+3)-2=-9x+27-2=-9x+25.