Question

current attempt in progress
when n guests are staying in a room, where n ≥ 4, the happy place hotel charges, in dollars, c(n)=138 + 18(n - 4).
what is the practical meaning of the 138 and the 18?
the 138 is
the 18 is
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hint
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Explanation:

In the cost function $C(n)=138 + 18(n - 4)$ for $n\geq4$, when $n = 4$, $C(4)=138$, so 138 is the cost for 4 guests. The term $18(n - 4)$ shows that for each additional guest ($n>4$), 18 dollars is added to the cost.

Answer:

The 138 is: The base - charge for 4 guests.
The 18 is: The additional charge per guest above 4 guests.