Answer:
The answer is C.
Step-by-step explanation:
<u>Step 1: Replace f(x) with y.</u>
f(x)=5x >>>>> y=5x
<u>Step 2: Switch x and y.</u>
y=5x >>>>> x=5y
<u>Step 3: Solve for y</u>
x=5y >>>> y= x/5
Then you have to do the inverse of dividing by 5. Which is multipilying by 1/5. This leaves you with,
y= 1/5x
<u>Step 4: Write in standard inverse notation (Replace y with f^-1(x))</u>
f^-1(x)=1/5x
Note: These steps work with ANY problem where you have to find the inverse function. I hope this helps :)