A firm has a total market value of $10 million while its debt has a market value of $4 million. What is the after-tax weighted average cost of capital if the before-tax cost of debt is 10%, the cost of equity is 15%, and the tax rate is 35%

Atennis club charges a monthly membership fee of $150 and charges it members $10 per hour to use a court. there's also $500 fee to become a member. stella joined the tennis club last spring, and she has been a member for 5 months. she has been playing 10 hours of tennis each month. stella values an hour of her time at $20. during a boring afternoon meeting, stella thinks about reserving a court to work on her serve for an hour tonight. what's stella's opportunity cost of working on her serve for an hour?