I need help with domain
Assume a car uses gas at a constant rate. After driving 25 miles since a full tank of gas was purchased, there was 14 gallons of gas left; after driving 65 miles since a full tank of gas was purchased, there was 10.8 gallons of gas left.
Use a function to model the amount of gas in the tank (in gallons). Let the independent variable be the number of miles driven since a full tank of gas was purchased. Find this function’s domain and range in this context.
My teacher is no help I genuinely do not understand