1. The quantity of gas that Wei's gas tank holds in all is 13.5 gallons.
2. The amount that Wei spent on gas the morning of his trip was $30.15.
3. The number of miles per gallon that Wei's car got was 32.72 miles per gallon.
The miles per gallon covered on a trip is the total distance travelled divided by the quantity of gallons of gas used.
Available gallons of gas = 5.75 gallons
The number of gallons purchased to fill the tank = 7.75 gallons
The total gallons that fill the gas tank = 13.5 gallons (5.75 + 7.75)
Cost of gas per gallon = $3.89
Cost of gas bought the morning of the trip = $30.15 ($3.89 x 7.75)
The total cost of gas for the gas tank = $52.52 ($3.89 x 13.5)
The number of miles per gallon = 32.72 miles per gallon (441.75/13.5)
Thus, Wei spent a total of $52.52 for 13.5 gallons of gas at $3.89 per gallon before refilling his tank.
Learn more about determining total costs at https://brainly.com/question/25109150
#SPJ1
