Wendy makes a graphic organizer to herself apply ohm’s law to electric circuits. which formulas belong in the regions marked x and y? a) x: i = i1 + i2 + i3 y: req = r1 + r2 + r3 b) x: req = r1 + r2 + r3 y: i = v/ req c) x: i = i1 = i2 = i3 y: v = v1 + v2 + v3 d) x: i = v/ req y: v = v1 = v2 = v3