Answer:
For this problem we can use the following proportional rule:

Where x represent the number of miles that we can travel with 75 gallons. For this case we can use this proportional rule since by definition
. If we solve for x we got:

And the best answer would be:
219 mi
Explanation:
For this problem we can use the following proportional rule:

Where x represent the number of miles that we can travel with 75 gallons. For this case we can use this proportional rule since by definition
. If we solve for x we got:

And the best answer would be:
219 mi