Answer: (d)- 
Step-by-step explanation:
Suppose 'b' is the number of bagels
It is to be divided into 15 bags
So, we use the divide operator i.e.

Center is ( -1.6 , -9.8 , 0 )
radius = √26 = 5.099 = 5.1
-14,-10,-6,-2,2,6
Answer by Mimiwhatsup: I could easily subtract -14 from -10 to find out the sequence so they are adding four each time. That means the pattern will continue going on like this 10, 14, 18, 22 and so forth.