Final answer:
To determine the better buy, we need to compare the cost per ounce of each can of Mountain Dew.
Step-by-step explanation:
To determine the better buy, we need to compare the cost per ounce of each can of Mountain Dew. The 12 oz. can costs $0.75 and the 16 oz. can costs $1.25.
To find the cost per ounce, we divide the total cost by the number of ounces.
For the 12 oz. can, the cost per ounce is $0.75 / 12 = $0.0625. For the 16 oz. can, the cost per ounce is $1.25 / 16 = $0.0781.
Therefore, the 12 oz. can is the better buy as it has a lower cost per ounce, $0.0625 compared to $0.0781 for the 16 oz. can.