The quantity of sensitech laser gaming mice demanded each month us related to the unit price by the equation

. P=50/0.01x^2+1 ( 0<=x<=20)

Where p is measured in thousands it dollars and x in units of a thousand

1. Find the revenue function and marginal revenue function

2. Use the marginal revenue function to compute R(2) that us the revenue to be realized from the sale of the 3rd unit of 1000 sensitech laser gaming mise