Judy purchases boxes of cereal at dollars per box. The total cost () is proportional to the number of boxes she buys. If there is a fee () on the whole purchase, which equation expresses the relationship between her total cost and the number of boxes she buys?

Question

A

B

C

D

Answer 1

The total cost () is proportional to the number of boxes she buys. Let's represent the number of boxes she buys as . We can write the equation as:

() =

Since there is a fee () on the whole purchase, we need to add that to the equation. We can further write the equation as:

() = +

Therefore, the correct answer is option:

C