Problem #$2-$ Adding blue insulation and siding. $(10$ points$)$

$2.$a$)$ Now that you have calculated the $R-$value for the $26$ and insulation portion of the assembly, calculate the $R$ value that is achieved by adding the blue exterior foam board $($R$-5)$ and an exterior siding layer $($R$0\mathrm{.}6)$ to the wood framing and pink batt insulation layer.

$2.$b$)$ Calculate the new $U$ Value for this combined assembly of framing, pink batt insulation, blue exterior foam board insulation and siding.