I need urgent help. Thank you

Assume that functions fand g are differentiable with f(4) = 4, f'(4) = - 5, 9(4): 2, and g'(4) = - 5. Find an equation of the line tangent to the graph of F(x) =f(x)g(x) atx=4. (E 2 The equation of the tangent line is [:l. ' (Type an equation using x and y as the variables.)