How to find general formula for partial sums?

A Partial Sum is a sum of sart of a sequence, where a sequence is a set of things (usually numbers) that are in order.

Partial Sums are often written using Σ (called Sigma) to mean "add them all up":

When you should calculate the kth partial sum of an arithmetic sequence, you need to add the first k terms. If k is large, than you will need a long time to calculate the sum. Fortunately, you can use a general formula instead of plugging in each of the values for n. 

The first thing you should do is to find the first term of the sequence.

Then you should find the kth term of the sequence.

Then you should use the formula for the kth partial sum of an arithmetic sequence to find the sum.

javeir earned 56 dollors more than kyle so kyle and javier had 14w but javier made 56 dollors more so 14w plus 56 equals 70w so kyle has 14w

step-by-step explanation: hope i plz give me brainliest with the points so this is not constant cause it says last week so its clearly not every week