Retained earnings versus new common stock Using the data for a firm shown in the following table, calculate the cost of retained camings and the cost of new common stock using the constant-growth valuation model. (Click on the icon located on the top-right comer of the data table below in order to copy ils contents into a spreadsheet.) Projected Current market Dividend dividend per Underpricing Flotation cost price per share growth rate share next year per share por share $64.00 7% $4.48 $1.50 $2.50 a. The cost of retained earnings is %. (Round to two decimal places.) b. The cost of new common stock is%. (Round to two decimal places.)