Neptune Corporation has a beta of 1.01 and a marginal tax rate of 21%. The expected return on the market is 14% and the return on a Treasury security is 1.13%. Estimate the firm's cost of internal equity. SET YOUR CALCULATOR TO 4 DECIMAL PLACES AND ROUND TO 2 DECIMAL PLACES AT THE END. DO NOT ENTER THE % SIGN. IF YOUR ANSWER IS 7.7011%, FOR EXAMPLE, ENTER 7.70