Answer:
for every 2 tables there are 10 chairs, so for 12 tables there are 60 chairs
Answer:
B!
Step-by-step explanation:
I think its 12.
I could be wrong. Let me know.
-Steel jelly
Answer:
Step-by-step explanation:
Key to this method is remembering that

So, if you divide the coefficient of x by 2 and square it, that will complete the square. With that in mind, things are easy.
6/2 = 3, so add 

So, c=9
Similarly, for the other two,

You don't really have to worry about the sign, since squaring will always make it positive
