Rogot Instruments makes fine violins and cellos. It has $1.7 million in debt​ outstanding, equity valued at ​$2.1 million and pays corporate income tax at rate 21%. Its cost of equity is 14% and its cost of debt is 5%.
a. What is​ Rogot's pretax​ WACC?
b. What is​ Rogot's (effective​ after-tax) WACC?