Final answer:
The unit rate of the cost of the juice is $1.28 per quart.
Step-by-step explanation:
The unit rate of the cost of the juice is the cost per unit of juice. In this case, the unit of measurement is the quart. To find the unit rate, divide the total cost of the juice by the number of quarts in the bottle.
Given that Megan buys a 2-quart bottle of juice for $2.56, the unit rate can be calculated as:
Unit Rate = Total Cost / Number of Quarts
Unit Rate = $2.56 / 2 quarts = $1.28 per quart
Therefore, the unit rate of the cost of the juice is $1.28 per quart.