Use function notation, evaluate functions on their domains, and interpret notation in context.
Interpret function notation in context
Problem
\(C(n)\) is the total cost in dollars for \(n\) tickets, and \(C(5)~=~35\). Identify the input and output, then interpret the statement in context.
Big Picture
What this problem is really about
Replace the abstract notation with the quantities named in the context. The number inside the parentheses is an input with its own units, and the value of the function is the corresponding output with different units. Reading the statement as a complete input-to-output sentence prevents reversing the quantities or mistaking a total for a unit rate.
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