Answer:
Mike spent $150 on his decorations.
Explanation:
In order to find the amount of money Mike spent on his decorations you must add all the costs together.
$41.64 + $36.84= $78.48
$78.48 + $72.49= $150.97
Then you round 150.97 to 151, which is also close to 150.
Hope this helps :)