Basically what you do is .. Sum up (3x2+1) which gives you 7
Sum up (3x3 +1) which gives you 10
Sum up (3x4+1) which gives you 13
Sum up (3x5 +1) which gives you 16 and
now that you have those numbers you're gonna add up
the totals and you should end up with Answer B- 46, Hope I helped [: