Given
"MC = 100 + 0.004 Q"
a)Calculating marginal cost of production
"At\\space Q=2500,5000,7500"
"MC_{Q=2500}=100+0.004(2500)=110\\\\\nMC_{Q=5000}=100+0.004(5000)=120\\\\\nMC_{Q=7500}=100+0.004(7500)=130"
b)
"MC=100+0.004Q\\\\Q=250(MC-100)"
The expression of output as a function of marginal cost.
"MC_{100}=250(100-100)=0\\\\\nMC_{125}=250(125-100)=6250\\\\\nMC_{150}=250(150-100)=12500"
c) Profit maximizing output level
As
"MC=100+0.004Q\\\\MR=P=150"
"Profit=(P-MC)Q=(Revenue-Cost)\\\\=(150-100-0.004Q)Q=50Q-0.004Q^2"
Maximizing profit
"\\frac{d(profit)}{dQ}=0\\\\\\frac{d(50Q-0.004Q^2)}\n{dQ}=0\\\\=50-0.008Q\\\\Q=\\frac{50\u00d71000}{8}=6250"
Profit maximizing output level at wholesale price at 150 is 6250
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