To find the unit rate price per ounce for the root beer, you can divide the total price of the bottle by the total number of ounces in the bottle.
The total price of the 64 oz. bottle is $3.20.
Unit Rate Price per Ounce = Total Price / Total Ounces
Unit Rate Price per Ounce = $3.20 / 64 oz.
Now, we perform the division:
Unit Rate Price per Ounce = $0.05 per ounce.
Therefore, the unit rate price per ounce is $0.05.