some friends decided to equally split the cost of gas on their trip. the expression 3g4 represents how much money each person had to pay in dollars for g gallons of gas. what does the expression 3g in the numerator represent? the total cost of the gas before it was split among the friends the total cost of the gas before it was split among the friends the number of people splitting the cost of the gas the number of people splitting the cost of the gas the cost per gallon of gas the cost per gallon of gas the cost per person