OK, I banged this out rather quickly this morning as I had a request for a cheat sheet. Anyone noticing anything wonkey in my math please e-mail email@example.com.
Do not memorize these relationships,,, do enough work to understand the relationships between the variables.
Welker does an excellent job.
Pajholden does a very good job, also.
mjmfoodie touches nicely upon the connection between fiscal policy an the governments intervention in its attempts to kickstart the economy.