Question

Need help with this if you can explain please do if not then just and answer is okay

Answer 1

C. All real values of sucth that x ≠ 7

Explanation:

This is the answer because:

1) Set up the composite function and evaluate, then find the domain of the result.

Therefore, the answer is C.

Hope this helps! :D

Answer 2

Explanation:

f(x) = x / (x - 7) = 1 + 7 / (x - 7).

The domain of f(x) depends whether the denominator of the rational expression is non-zero.

When (x - 7) = 0, x = 7.

Hence domain of f(x)

= All real values of x excluding 7. (C)