To answer this question, we can proceed as follows:
1. We have that the function is:

2. To find the inverse of the function, we can start by interchanging the variables:

3. Now, we need to solve for y as follows:
1. Multiply both sides by 7:

2. Subtract 2 from both sides of the equation:

In summary, therefore, the inverse function f is p(x) = 7x - 2 (option A).