Start at -8 move to the left 8 more times,. You get -16.
2,4,6,8,10,0,0,0,0,0,1,4,9,16,25,1,2,3,4,5
L-s=16
4s-5=l
4s-l=5
3s=21
s=7
l-7=16
l=16+7
l=23
The smaller number is 7 and the greater number is 23
So first you would need to time 5 and 4.33 then divide by 2 then times by 3 cause there are 3 triangles. it would equal C.