Question

Correct answer will get brainpower and +40 points! I need step by step instructions though wrong answers will get reported.

Q1: f (x) =2x - 9

Part A) Find f^-1 (3)

Part B) Find f^-1 (x)

These are the parts that need to be solved.
tysm for the help!

Answer 1

Given :-

f (x)=2x-9

To find:-

`\sf f^(-1 (3))`

`\sf f^(-1 (x))`

Solution :-

We need to find

`f^-3 \\ f^(-x)`

`\qquad{:}\longrightarrow\tt f^-3=2^(-3)-9`

`\qquad{:}\longrightarrow\tt -8-9`

• 
  `\qquad{:}\longrightarrow\tt f^(-3)=-17`

`\qquad{:}\longrightarrow\tt f^-x=2(-x)-9`

`\qquad{:}\longrightarrow\tt -2x-9`

• Multiply (-1)

`\qquad{:}\longrightarrow\tt f^(-x)=2x+9`