Answer:
its A (12-i)
Step-by-step explanation:
got it right on edge 2020
Basically, the question is asking, what will happen if we increase 9 by 30%?
first, what is 30% of 9?

So, the increase will be by 2.7 days,
So the total amount will be 9+2.7=11.7 - this is the correct answer.
Answer:
-6 and 8
Step-by-step explanation:
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18a+9b you just add the variables together