Taylor buys 2 gallons of milk for $5.50. What is the cost per gallon

Rate answer choices
2.75 for 1 gallons
5.50 for 2 gallons

Unit answer choices
2.75 for 1 gallon
5.50 for 2 gallons

How much will five gallons of milk cost

5.50
2.75
13.75
16.50