Which expression would you use to determine the UNIT RATE of 15 miles/gallon? a. 60 miles/ 4 gallons
b. 3 gallons/30 miles
c. 30 miles/3 gallons
b. 4 gallons/ 60 miles

2xy/9 is the answer to this problem

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.