Combine standard function types arithmetically to create models.
Choose the arithmetic operation that combines two functions in context
Problem
Student attendance is \(f(x)\) and guest attendance is \(g(x)\) for the same event input \(x\). Name the arithmetic operation that models total attendance, write the combined function symbolically, and justify it from the word total and compatible person units.
Big Picture
What this problem is really about
The requested total must include both attendance counts once. We’ll verify that both functions use the same event input and person units, identify the operation that combines compatible counts into one whole, write it symbolically, and confirm that the resulting unit remains a count of people.
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