answer all of them please

Avicomp has a $14.5 milion debt we outstanding, with 6.8%.coupon rate. The debt has semanal coupons, the rest coupon due x month, wd the dettatores in five years to cely priced of What is Avicorp's pre-tax cost of obt? Note: Compute the effective annual retum b. I ricorp faces a 40% tax rate, what is as after-tax cost of debt? Note: Assume that the firm willways be able to utilice its full interest to shield a. The cost of one is put your. Round to towe decimal place)