A $1,000 bond with annual coupons is redeemable at par at the end of 10 years. At a purchase price of $870, the yield rate is i. The coupon rate is given by the expression: (i - 0.02). Calculate i, the yield rate, using the "Premium/Discount formula".
(NOTE: The premium/discount formula is: P = C + (Fr - Ci) * (1/i) * n, where P = price, C = redemption value, F = par value, i = yield rate (yield to maturity)