Final answer:
Vina will pay $0.94 for her 3.5-ounce cup of frozen yogurt, after multiplying the cost per ounce ($0.27) by the number of ounces (3.5).
Step-by-step explanation:
Vina will need to calculate the total cost of her frozen treat by multiplying the cost per ounce by the total number of ounces she has. The frozen yogurt is priced at $0.27 per ounce, and she has 3.5 ounces.
So, the calculation she needs to do is $0.27 per ounce × 3.5 ounces. Multiplying these together:
$0.27 × 3.5 = $0.945
Rounding to the nearest cent, the cost is approximately $0.94. Thus, Vina will pay $0.94 for her cup of frozen yogurt.