1. The problem statement, all variables and given/known data Simplify in order to find voltage output. 2. Relevant equations Vout= -Vref x (A + B/2 + C/4 + D/8) 3. The attempt at a solution Firstly is this even correct? Secondly, I have 2 voltages (2.5V and 5V), what should I do now? what is my Vref?