Suppose that $$f(x) = \frac{3x}{\left(4-5x\right)^{5}}.$$
(A) Find an equation for the tangent line to the graph of $f$ at $x = 2$.

Tangent line: $y$ =

(B) Find all values of $x$ where the tangent line is horizontal (enter these values separated by commas, if needed). If there are no such values, enter NONE.

$x$ values =