Hey I need help solving the following problems. I am a graduate student taking ECON 705.

You are a monopolist and your inverse demand curve and cost function are the following :

P=90-(3Q/2)

TC (Q) =400Q + [(Q^3/2}

The MC is :

You are a monopolist and your inverse demand curve and cost function are the following:

P=90- (3Q/2)

TC (Q) =400Q + [(Q^3/2}

The MR is

What is the monopolistic Firms marginal revenue function if inverse demand function for its product is : p=(1/2)a -2bQ?