Jodi went 54 miles on 3.5 gallons of gas, and she wants to know how far she can go on 9 gallons of gas. Which proportion would be useful to solve the problem?

Responses
A 954
= x3
9 54 = x 3
B 93
= 54x
9 3 = 54 x
C 543.5
= x1
54 3.5 = x 1
D 549
= 3.5x
54 9 = 3.5 x
E 543.5
= x9

B 93 = 54x

9 3

The proportion that would be useful to solve the problem is D: 549 = 3.5x.