The endpoint of a side of a polygon is called a___ the answer is B
Its quite simple. All you have to due is substitute the numbers they gave you for each letter. So.... it would look like this > 5(2) + 3(5) - 2(4) = ? Now all you have to do is solve it! Hope this helps :)
For this case we have the following polynomial:

We make the following change of variables:

Rewriting we have

Factoring the second order polynomial we have:

Then, returning the change we have:

Finally, we factor the expression in the parentheses of the second term:

Answer:
the completely factored form is:

7..
49 can be equally divided by seven, which means there would be 9 red roses in each center piece. And 63 can be equally divided by 7 which means there would by 7 white roses in each center piece.
hope this helps