please help with c and d question, I will upvote!

Calculation of individual costs and WACC BlackRock, Inc. (BLK) has a capital structure that consists of commor stock equity and debt. The market capitalization of its equity is \\( \\$ 75.127 \\) billion and its debt has a market value of \\( \\$ 4.937 \\) billion. a. Calculate the market value weights for BLK's capital structure. b. Calculate BLK's cost of equity using a beta of 1.42 , a risk-free rate of \0.88, and a market risk premium of \6.90 c. Calculate BLK's cost of debt using a bond price of \\( \\$ 1,079.65 \\), semi-annual coupon payment of \\( \\$ 38.75 \\), and 12 years to maturity. d. Calculate BLK's current WACC using a \21 corporate tax rate. a. The market value weight of long-term debt in BLKs capital structure is \6.17. (Round to two decimal places.) The market value weight of common stock equity in BLKs capital structure is \\%. (Round to two decimal places.) b. BLK's cost of equity using the CAPM is \\%. (Round to two decimal places.) c. BLK's before-tax cost of debt is \\%. (Round to two decimal places.)