If an A Rated Corporate Debenture with a coupon rate of 4.5% and a price of 98.5% of par had a maturity date of 9/18/34, what would its YTM be (assuming semiannual coupons & state as an APR)?

Using the coupon rate above, if this 12 year bond experienced a 1.5% increase in YTM, what would its new present value be? What do your results tell you about the relationship between price and YTM...especially with longer-term bonds?