Final answer:
To represent the cost of buying two containers of juice on sale with the 'buy one, get one half-off' rule, you can use the expressions j + j/2 or j/2 + j.
Step-by-step explanation:
To represent the cost of buying two containers of juice on sale with the rule 'buy one, get one half-off,' we can use the following expressions:
- j + j/2: The first expression represents the cost of buying one container of juice at its original price, j, and getting the second container at half-off.
- j/2 + j: The second expression represents the cost of buying one container of juice at half-off and getting the second container at its original price.