Question

evaluate the sum:

Answer 1

\[\sum_{n=1}^{5} (3n+1)\]

Answer 2

\[\sum_{n=1}^{8} 2n/3\]

Answer 3

(3(1)+1) + (3(2) + 1) + (3(3) +1) + (3(4) + 1) + (3(5) + 1)