(A) The supply function generally is considered to have positive slope. Qa has positive slope. Qb has negative slope, so is probably the demand function.
supply function: Qa
demand function: Qb
(B) The equilibrium price is the price that makes supply equal to demand.
Qa = Qb
50 +p = 200 -4p
5p = 150
p = 30
The equilibrium price is 30.
(C) The price elasticity of supply is computed as
Es = (dQa/dp)·(P/Qa) = 1·p/(50+p)
Es = p/(50+p)
At p=30, the numerical value is Es = 30/80 = 3/8. Qualitatively, the supply is inelastic.
Talk to your teacher about the homework.
And maybe it seems like a lot because it's hard for you to do. You should try to learn the material better, then you'll be able to finish the work faster, and it won't seem like much.
Hope that helps.
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It is unhealthy for studying 8 hour continuously
If you want to study then you must have a strong determination of reading
You can also get some inspiration from your parents too
