What is the WACC for a firm with 40% debt, 20% preferred stock, and 40% equity if the respective costs for these components are 9.23% before tax, 12% after tax, and 18% before tax? The firm's tax rate is 35%.

Based on the following information, make an estimate of the stock's beta: Month 1 = Stock +0.9%, Market +1.1%; Month 2 = Stock +1.2%, Market +1.4%; Month 3 = Stock -1.8%, Market -2.0%.

Calculate the risk premium on stock C given the following information: risk-free rate = 5%, market return = 13%, stock C beta = 1.3.

If Treasury bills yield 6.0% and the market risk premium is 9.0%, then a portfolio with a beta of 1.5 would be expected to yield:

An investor was expecting an 18% return on his portfolio with beta of 1.25 before the market risk premium increased from 8 to 10%. Based on this change, what return will now be expected on the portfolio?

What is the beta of a company with an expected return of 12% if Treasury bills yield 6% and the market risk premium is 8%?