A young engineering company is a subcontractor in an effort to develop technology that will reliably detect and respond to release of a nuclear weapon. The company is in need of additional funding and issues a series of $1,000 face value bonds that pay a nominal annual rate of 7% with quarterly payments. The bond matures in 6 years.

If you buy one bond for $890 and keep it until maturity, what is your effective annual rate of return?