Answer:
1 and 8
Step-by-step explanation:
Extierior think of it as interior is the inside they both start with in and then extierior is the outside
Answer: 
Step-by-step explanation:
You need to set up two cases (Positive case and negative case) and solve for "x".
- POSITIVE CASE IF: 

- NEGATIVE CASE IF: 

Therefore, the solution is:

You would look at number after the thousandths place to go up or down 72,000.
Answer:
a^2-1
Step-by-step explanation:
(a+1)(a-1)
=a^2-1