Answer:
Step-by-step explanation:
Given : Expression = 
Simplifying the expression :
Step 1. Write the expression = 
Step 2. Add the similar elements: 
= 
Step 3. Add the similar elements: 
= 
Therefore,
is the simplified form of 
Answer:
C and E I think
Step-by-step explanation:
They both represent taking number of people, or population