(Solved): For the given composite function, identify the inner functions for \( f(x) \) and \( g(x) \).) \[ \ ...

For the given composite function, identify the inner functions for \( f(x) \) and \( g(x) \).) \[ \begin{aligned} y &=\sqrt[3]{1+7 x} \\ (f(u), g(x)) &=( \end{aligned} \] Find the derivative \( \frac{d y}{d x} \). \[ \frac{d y}{d x}=\frac{7}{3(1+7 x)^{\left(\frac{2}{3}\right)}} \]