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?

A)

9

3

=

54

x

Eliminate

B)

9

54

=

x

3

C)

54

3.5

=

x

9

D)

54

9

=

3.5

x

C is your answer because of the fact that it sets the proportion needed to answer the question which the question would be how many miles can she drive on 9 gallons of gas.

so the correct proportion is 54 x

_ _

3.5 9! Then your answer would be she can drive about 139 miles if she has 9 gallons of gasoline. : )