Here is what I am trying to figure out $\sum_{i=1}^n 3+2 (1-i) $ It would be nice if this could be put into a single equation to be used in a larger system. I know that it is possible to break up the summation into two parts like this $\sum_{i=1}^n 3+\sum_{i=1}^n2 (1-i) $ and it then becomes $3*n+\sum_{i=1}^n2 (1-i) $ I get stuck in trying to convert the second summation into a regular equation. Ultimately, it seems that this should be some sort of exponential function, but I am not having any luck finding it.
This is for a personal project and not homework in case this is a concern.
Thank you in advance for your help.
Brandon