Assume that a not-for-profit company has $20 million of long-term tax-exempt debt with an interest rate of 6.0%. The organization has $3 million of unrestricted net assets, with an estimated cost of capital of 7.5%, and $9 million in an endowment with an estimated 5.0% return on assets (cost of capital). What is its weighted average cost of capital (Chap.17 and if necessary, access this video on weighted averages: www.youtube.com/watch?v=slFqL86q3EA& I?). (Show your calculations.)