Answers:
I_B = 0.0059 mA
I_C = 0.591 mA
I_E = 0.5969 mA
Output load line:
y-intercept = 4.98 mA, x-intercept = 20 V

Answers:
I_C = 9.55 mA
V_CE = 10.35 V

Answers:
i) I_B = 0.006 mA, I_C = 0.864 mA,
I_E = 0.87 mA
ii) 144

Answers:
Output load line:
y-intercept = 3 mA, x-intercept = 6 V
The operating points: (4V, 1 mA)

Answers:
R_B = 965 k-ohm
R_C = 2 k-ohm
I_C = 4.6 mA
V_CE = 10.8 V

Answers:
i) point x = 3.7 V
ii) I_B = 0.06 mA, I_C = 3 mA

Answer: V_I = 3.115 V

Answers:
I_B = 0.011 mA, I_C = 0.88 mA
V_CE = 3.489 V

Answers:
R_B = 5.12 k-ohm
R_E = 0.495 k-ohm