Answer:
$28.40
Step-by-step explanation:
You want the cost of gas for a 389.2 mile trip in a vehicle averaging 29.6 miles per gallon using gas costing $2.16 per gallon.
The cost can be figured by converting miles to dollars using the given conversion factors.
[tex](389.2\text{ mi})\times\dfrac{1\text{ gal}}{29.6\text{ mi}}\times\dfrac{\$2.16}{1\text{ gal}}=\dfrac{\$2.16\cdot389.2}{29.6}=\boxed{\$28.40}[/tex]
The gasoline for the trip will cost about $28.40.