Final answer:
The Changs paid a total of $329.94 for a new lamp and a comforter set, calculated by adding together the individual costs of each item.
Step-by-step explanation:
To calculate the total amount the Changs paid for their new bedroom items, we simply need to add the cost of the lamp and the comforter set together. The lamp costs $89.95, and the comforter set costs $239.99.
Let's add these two amounts:
Lamp: $89.95
Comforter set: $239.99
-----------------------
Total cost: $89.95 + $239.99
To find the total, we perform the addition: $89.95 + $239.99 equals $329.94. Therefore, the Changs paid a total of $329.94 for the lamp and the comforter set.