Derive the marginal revenue equation and calculate the marginal revenue obtained at each price and report it in column 5 of the table below.

(Can you show a step by step on how to solve this question please, I am stuck on the marginal revenue equation)

1 2 3 4 5 Price Quantity Elasticity Revenue Marginal Revenue Price 1 (a High price) 95 25 -0.76 $2,375 Price 2 80 100 -0.16 $8,000 Price 3 70 150 -0.0933 $10,500 Price 4 50 250 -0.04 $12,500 Price 5 35 325 -0.0215 $11,325 Price 6 15 425 -0.007 $6,375 Price 7 (a Low price) 5 475 -0.002 $2,375 O