Answer:
72
Step-by-step explanation:
because when you do 55% out of 160 it will give you 88 which you subtract from 160 and then you will end up with 72
28n^4 +16n^3 -80n^2
we can factor out a 4n^2
4n^2 (7n^2 +4n - 20)
4n^2 (7n-10) (n+2)
A
evaportation
