Question

A partial sum of an arithmetic sequence is given. Find the sum.

10 over sigma
k=0 under sigma.
(3+0.25k) beside sigma

Answer 1

\[\Sigma (3+0.25k)\]
with 10 on top and k=0 under the sigma

Answer 2

@freckles have time? :)

Answer 3

@zepdrix

Answer 4

would the first step be to solve for k? how do I do that? o.o

Answer 5

@peachpi