Final answer:
To find the cost per gallon of gasoline, divide the total cost of $67.50 by the total number of gallons, 23, which equals $2.9347826087 per gallon. After rounding to the nearest cent, the cost per gallon is $2.93, which is option B.
Step-by-step explanation:
The question asks us to calculate the cost per gallon of gasoline. We have the total cost, which is $67.50, and the total gallons, which is 23 gallons. To find the cost per gallon, we need to divide the total cost by the total number of gallons.
Here's the calculation:
Divide $67.50 by 23 gallons to get the cost per gallon.
$67.50 ÷ 23 gallons = $2.9347826087 per gallon.
Round the result to the nearest cent to get $2.93 per gallon.
So, the cost per gallon of gasoline for the Barrera family's trip to Cancun is $2.93 per gallon, which corresponds to option B.