A care starts a journey with 18 gallons of fuel. Assuming a constant rat, the car consumes 0.04 gallons for every mile drive. Let A represent the amount of gas in the tank (In gallons) and m represent the number of miles driven. How much gas is in the tank if O miles have been driven?What is the rate of charge that relates the amount of gas in the tank to the number of miles driven?Write a linear function that models the relationship between the number of miles driven and the amount of gas in the tank.