Answer:
14
Step-by-step explanation:
[tex]h(x) = 17 + \frac{x}{6} \\ \\ h( - 18) = 17 + \frac{ - 18}{6} \\ \\ h( - 18) = 17 - 3 \\ \\ h( - 18) = 14 \\ \\ [/tex]
