Please show all work or at least what equations were used, thanks.

1. Apple's 9 percent annual coupon bond has ten years until maturity, and the bonds are selling in the market for $890. The firm's tax rate is 36 percent. What is the firm's after-tax cost of debt? 2. ADK Industries common shares sell for $60 per share. ADK expects to set its next annual dividend at $3.75 per share. If ADK expects future dividends to grow at 9 percent per year, indefinitely, the current risk-free rate is 4 percent, the expected rate on the market is 11 percent, and the stock has a beta of 1.5, what should be the best estimate of the firm's cost of equity? 3. Marme Inc. has preferred stock selling for 137 percent of par that pays an 11 percent annual dividend. What would be Marme's component cost of preferred stock? Assume that Marme has a floatation cost of 8% for new preferred stock issue. 4. JLP Industries has 6.5 million shares of common stock outstanding, with a market price of $20.00 per share. The company also has preferred stock outstanding with a market value of $10 million, and 25,000 bonds outstanding, each with face value $1,000 and selling at 90 percent of par value. The cost of equity is 14 percent, the cost of preferred is 10 percent, and the cost of debt is 6.25 percent. If JLP's tax rate is 34 percent, what is the WACC