Which expression is equivalent to (x^6×x^10/×^-3)^2 and why

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

What is the greater volume 72 quarts or 23 gallons

Ineed to know the answer right now! !