Answer: The first option, the one in orange.
Step-by-step explanation:
This is the associative property.
Hope this helps, good luck on the test! :)
Answer: 16
Step-by-step explanation:

Let's complete the square.



Answer:
b
Step-by-step explanation:
Answer:
5/8
Step-by-step explanation:
1 - 3/8
1 + (-3/8)