A boarding kennel mixes dry dog food and wet dog food to feed the dogs. The following table shows the mixture for different amounts. Dry dog food (c) Wet dog food (oz)
4.5 1.5
6 2
9 3
? 5.5
Is the relationship between the amount of dry dog food and the amount of wet dog food proportional? Use the first three rows of data to answer this question. Show your work and explain!

How much dry dog food is used with 5.5 oz of wet dog food? Show your work!