Question

The inverse of the function f(x) = 1/2x + 10 is shown.

Answer 1

the answer is f(x)= 2(x-10)  which you are able to simplify to

2x-20

Answer 2

Answer:

$20$

Step-by-step explanation:

In order to find the inverse of a function, just follow the next steps:

Step 1: Write y=f(x):

$y=\frac{1}{2} x +10$

Step 2: Isolate x:

$y-10=\frac{1}{2} x\\\\2y-20=x$

Step 3: Replace every x with a y and replace every y with an x:

$2x-20=y$

Hence:

$f^{-1} (x)=h(x)=2x-20$

We can conclude from the previous result that the missing value is 20