(20 points) Use Kirchhoff's Rules to write three (3) discrete equations relating the unknown values in the circuit shown, in terms of the known values. Do not include any numeric values in your equations - use R1, R2, R3, etc. For each equation, state which Rule you're applying and to which part of the circuit (label the circuit as needed). R1 = 50 0 1 = 0.33A R: = 25 0 EZ S = 35 V R= = 40 0 6 =18V 2 = 0.54A RA = 80 0 Extra Credit: (9 points) Use your equations to solve for the unknown emf, resistor, and current. Be sure to show your work