E=supply voltage=2v
R=resistance=50ohms
Ib= 'reverse bias current' = 1*10^-9 Amps (1nA)
k=Boltzman's constant = 1.38*10^-23
T=temp of diode=300K
Q=charge=1.6*10^-19
Vr = voltage across resistor (unknown)
Vd = voltage across diode (unknown, doesnt really matter, not trying to find it yet)
By ohms...