The expression given is

The sum of the expression will be,

The sum will be
Answer:
y= 
Step-by-step explanation:
To find inverse of something, just switch the variables
x=y^2
now try to solve back in terms of y
y= 
Answer:
the answer is $1920
Step-by-step explanation:
4% of $2000 is $80 so if they take 4% its just $2000 - $80 = $1920
Hope this helped! <3