Please help me! I am desperate! I need the answer fast!

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

Write a corresponding real world problem to represent 2x - 125=400