If n=5 and r=1 (1+b)=10a,determine b in terms of a

Answer 1

what do n and r have to do with the problem?

Answer 2

N is over the sigma sign which is 5 and r is under the sigma sign which is =1.......

Answer 3

so you have

5
∑ (1+b) = 10a
1

I still don't get it. Can you edit the expressions above to include everything?

Answer 4

If it's as written,

5(1+b) = 10a
1+b = 2a
a = (1+b)/2

Answer 5

Steve can you help me on mine