1. The problem statement, all variables and given/known data I am given a resistor, 40KΩ + or - 20%. I know the uncertainty formula but it involves two variables, but not how to combine these together to get an answer. Not to mention, isn't the uncertainty formula redundant since I know the 20% over or under? 2. Relevant equations 3. The attempt at a solution I have no attempt as I have no clue where to start. I just need a nudge and the TA is not helpful in the course of three emails.