High School

You begin painting your house with 10 gallons of paint you purchased at the hardware store. Each gallon of paint covers 400 square feet of surface area. If \( g \) is the gallons of paint used for painting \( x \) square feet, which type of model would best describe the relationship between \( g \) and \( x \)?

A) Linear
B) Radical
C) Quadratic
D) Exponential