Demarco paid $3.19 per gallon both times that he stopped for gas on a weekend trip. He bought 12.53 gallons of gas the first time and 11.86 gallons the second time. Which expression shows the total cost in dollars of the gas he bought on this trip?

The first option is the correct answer.
Step-by-step explanation:
Cost of per gallon of gas = $3.19
Amount of gas purchased on first trip = 12.53 gallons
Amount of gas purchased on second trip = 11.86 gallons
The expression that shows the total cost in dollars of the gas Demarco bought on this trip is :
Total cost = [tex]3.19(12.53+11.86)[/tex]
If you want to solve it, the answer comes $77.80