A vehicle uses a blend of gasoline and diesel fuel. The total distance, in miles, that the vehicle can travel on a certain amount of fuel is given by the equation , where is the number of gallons of gasoline and is the number of gallons of diesel.
Which of the following statements best describes the meaning of the number 25 in this equation?
The total number of miles traveled on gasoline.
The total number of gallons of gasoline used.
The number of miles the vehicle can travel per gallon of gasoline.
The number of gallons of gasoline needed to travel 25 miles.
