For this case we must find the inverse of the following function:

Then, we follow the steps:
We change
by y:

We exchange the variables:

We clear the variable "y":

We change y for 

Answer:

Answer and workings in the attachment below.
Answer:
0.085
Step-by-step explanation:
We know that 1/2=0.5. And to convert from percent to decimal you have to divide by 100.
What picture ? Did you attached it