Yea thank goodness is not the only part I know

a.
Insides:
[tex]u=-5e^x+12x[/tex]Outside:
[tex]y=\sqrt{u}[/tex]b.
Use the chain rule to find the derivate:
[tex]\frac{d}{dx}(y(u))=\frac{d}{du}(y(u))*\frac{d}{dx}u[/tex][tex]\begin{gathered} \frac{d}{dx}(y)=\frac{d}{du}\sqrt{u}*\frac{d}{dx}(-5e^x+12x) \\ \\ \frac{dy}{dx}=\frac{1}{2\sqrt{u}}*(-5e^x+12) \\ \\ \frac{dy}{dx}=\frac{-5e^x+12}{2\sqrt{u}} \\ \\ \frac{dy}{dx}=\frac{-5e^x+12}{2\sqrt{-5e^x+12x}} \\ \end{gathered}[/tex]Derivate:
[tex]\frac{dy}{dx}=\frac{-5e^x+12}{2\sqrt{-5e^x+12x}}[/tex]