Answer: C
Step-by-step explanation
You have to divide the output, which in this case is Y (5), into the input, also known as X (1). You will then get your answer, which is 5 dollars per car. To put that into an equation, it will be: y = 5x.
Here is the work:
5(y) ÷ 1(x) = 5
y = 5x