2(5k+1)
2x5x2+1 =21
K=2 | 21
2x5x3+1 =31
K=3 | 31
-29 is 29 bars away from 0. 100 is 100 bars away from 0.
29 + 100 = 129
So the distance between -29 and 100 is 129. The answer is D.
The answer to your question is C
Ok so do 5x12=60
then do 2x3=6
after do 1/2(3x4)=6
then do 60-12=48