A: communicative property, it is this because communicative property allows you to switch around the order.
C is the answer you get while doing the math
Answer:
B
Step-by-step explanation:
Assignment: 
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Answer: 
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Explanation: 
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[ Step One ] Remove Parenthesis: (a) = a

[ Step Two ] Simplify 

[ Step Three ] Rewrite Equation

[ Step Four ] Simplify 

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Answer:
thats right.
Step-by-step explanation:
the first place after the decimal is tenths, second, hundredths, third thousands, and so on