Final answer:
To find the unit rate per fluid ounce of a two-gallon bottle of juice costing $51.20, convert gallons to fluid ounces and divide the total cost by the total number of ounces, resulting in $0.20 per fluid ounce.
Step-by-step explanation:
The student is asking how to calculate the unit rate of juice per fluid ounce when a two-gallon bottle of juice costs $51.20.
To find the unit rate, first convert gallons to ounces, because 1 gallon equals 128 fluid ounces.
For two gallons, you would have 2 × 128 = 256 fluid ounces.
Next, divide the total cost by the number of fluid ounces to find the cost per ounce.
The calculation goes as follows: $51.20 ÷ 256 fluid ounces = $0.20 per fluid ounce.