$[-/2$ Points$]$

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WANEFMAC$81\mathrm{.}2\mathrm{.}001.$

This exercise is based on the following functions.

$f(x)=x^2+2$ with domain $(-,)$

$g(x)=x-2$ with domain $(-,)$

$h(x)=x+5$ with domain $[18,)$

$u(x)=\sqrt[\phantom{2}]{x+18}$ with domain $[-18,0)$

$v(x)=\sqrt[\phantom{2}]{18-x}$ with domain $[0,18]$

$($a$)$ Write a formula for the indicated function.

$s=f+g$

$s(x)=$

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$($b$)$ Give the domain. $($Enter your answer using interval notation.$)$

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$($c$)$ Specify the function's value at the given point $a=-5,$ if defined. $($If an ans $s(-5)=$

Show My Work $($Optional$)$

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