Question

The inverse of the function f(x) = x + 10 is shown.

Answer 1

Answer:

So, the answer is 20

Step-by-step explanation:

$f(x) = \frac{1}{2} x + 10 = = = > \\ f(x) - 10 = \frac{1}{2} x = = = > \\ 2f(x) - 20 = x = = = > \\ {f}^{ - 1} (y) = 2y - 20 = = = > {f}^{ - 1} (x) = 2x - 20$