There are a lot of names for it. The most common is senior slump and senioritis.
3 - x = 2^2
3 - x = 4
-x = 4 - 3
-x = 1
x = -1
The answer is 640 ounces in a 5.0 gallon container
Maybe a higher quality job like a manager or something your interested in doing that includes a diploma