Because force= acceleration x mass Acceleration is constant for a body of any mass since force is exactly proportional to mass.
I got D for the answer pi x 12mmsquare cause you're only measuring the area of the bullseye and i got 452.39

We are to find the value of

First we need to find the inverse of f(x) . The inverse of

is

.
Steps to find inverse of f(x) are shown below in the image.
So

=
Therefore, the correct answer is option C