number of cases ordered: 1, 3, 5, 10. number of rolls of paper towels: 12, 36, 60, 120. a restaurant is placing an order for paper towels. the data table shows the amount of paper towel rolls compared to the number of cases. at which ratio in the data table does the constant of proportionality appear? write your answer as an order pair inside the parentheses provided.

The constant of proportionality appears as the ratio between the number of rolls of paper towels and the number of cases.

The ratio is (12, 1), (12, 3), (12, 5), and (12, 10) for the given data.

Therefore, the constant of proportionality appears as the ratio (12, 1).