For the function f, use composition of functions to show that f-1 is as given.
, 
What will be an ideal response?
Answers may vary. One possible solution is:
1. (f-1 ? f)(x) = f-1(f(x)) = f-1
= 7
+ 7 = 
+ 7 = x;
2. (f ? f-1)(x) = f(f-1(x)) = f
= 
/7 = 7x/7 = x
You might also like to view...
Which of the given lines is parallel to the line x=8+t, y=t, z=-7-10t?
 multiple choice.png)
State the domain of the rational function.f(x) = 
A. (-?, 12) ? (12, ?) B. (-?, - 3) ? (- 3, 3) ? (3, ?) C. (-?, - 12) ? (- 12, 12) ? (12, ?) D. (-?, 3) ? (3, ?)
Solve the problem.One fifth of Mary's earned income is deducted from her paycheck for withholdings. Three fourths of the withholdings are for taxes. What fraction of Mary's earned income is deducted for taxes?
A. 
B. 
C. 
D. 
Determine the maximum possible number of turning points for the graph of the function.f(x) = (x - 5)(x - 3)(x + 7)(x + 4)
A. 1 B. 0 C. 4 D. 3