(f+g) means add the expressions together. combine like terms.


there is no other constant term so the -4 stays as is.
X=20
180-77=103
so then simplify (6x-17)=103
6x=120
x=20
6 is d, 7 is b, 8 is c, 9 is c
The answer is {1, 2, 10, 50, 75}. It has a median of 10 and a mean larger than 10
Answer:
A. Air that is breathed in :)