Algebra-2

In function notation, a function describes the relationship between two variables, where one variable depends on the other. Here, "C" represents the total cost, and "n" represents the number of items.

C(n) is the appropriate notation. This notation indicates that C is a function of n, meaning the total cost changes based on the number of items purchased.

Option B, C + n: This expression suggests an arithmetic operation rather than a function. It implies adding n to C, which...