I need lots of help please show work

"i really need this answered quickly ! " how can investing in the stock market consumers reach their savings and spending goals?

What would you call a political system that is only meant to last for a short time

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?