Answer: They're capitals of cities.
Step-by-step explanation:
You could continue the set with Madrid, Bucharest, Sofia, Luxembourg, Berlin, Rome, Athens... and so on.
True: adding two polynomials will always result in another polynomial
I believe it would have been $347,316.95 at the time of purchase.
1.2% of 456996 is 5483.952

So:

first divide 7(becauae there's 7days in a week) into 35
then you get 5
so multiply 5 by 3 and you get 15
so 15cm the seedling will.grow