Hello, i have two problems that i can't seem to solve. For the first one, i know its a non-inverting OP where my Rs should be my 3.3K ohm resistor. But for my feed back, would it be the sum of the other three resistors? Also, my Vo for the top OP amp should equal my Vx correct? Also, how would i find my ia and io? thank you for your help.