I thought the market risk premium was = rm - rf , which is the return on the market - risk free rate. The information given doesn't say what the return on the market is, so I assumed we had to just use the market risk premium. This is why I used just the 7%. Let me know what numbers you are using for that part of your formula.
On 8.2, I used the discount factors to find the present value of the firm's debt.
7 payment of 480,000, with an additional 6,000,000 at the end of the 7 years. I used the 10% to compute the present value.
480/1.10 + 480/1.102 + 480/1.103 + 480/1.104 + 480/1.105 + 480/1.106 + 6480/1.107
I am not for sure if this is correct, but that is how I interpreted the instructions.
[NEAS: Correct. We use the coupon rate to get the dollars of debt payment. We use the yield to maturity to dsicount the future cash flows to get the market value.]