Answer:
Option A
Step-by-step explanation:
The domain of a function is the set of all numbers that has an image in the co domain. It means that those elements are mapped to other elements and give output values.
From the figure we see that all the elements in 
are marked to other elements in 
. So, the domain would be:
Hence, Option A.
Answer:
B.
Step-by-step explanation:
It says that when her brother gives her an encouraging look, it boosts her confidence. So, I would assume it'd be that one.
Answer:
8
Step-by-step explanation:
5x - 2y
5 ( 2 ) - 2 ( 1 )
10 - 2
8
Answer:
C
Step-by-step explanation:
start with factoring.
5x+15-9x+4
then solve
-4x+19
I would say a circle graph would be best to use
