A 5.15 percent coupon bond with 16 years left to maturity can be called in four years. The call premium is one year of coupon payments. It is offered for sale at $1,070.50. What is the yield to call of the bond? (Assume interest payments are semiannual.) (Round your answer to 2 decimal places.)

please set up the problem using TMV solver in apps for a TI-83!