I thought your attachment would show your work. Instead it just shows the problem again.
You are give the function \(\displaystyle A= \frac{13x+ 1}{x}\)
and the first thing you are asked to do is find the derivative, A'.
Have you done that?
There are two ways to find the derivative of A:
1) use the quotient rule
2) write A as \(\displaystyle A= (13x+ 1)x^{-1}\) and use the product rule.
Do you know the "quotient rule" or the "product rule"?
The quotient rule says that (u/v)'= (u'v- uv')/v^2.
The product rule says that (uv)'= u'v+ uv'.
Of course the derivative of 13x+ 1 is the constant, 13, the derivative of x is 1, and the derivative of \(\displaystyle x^{-1}\) is \(\displaystyle -x^{-2}\).