What is the yield to maturity on a $5,000 face-value discount bond maturing in one year that sells at $4,166?

A bond has a face value of $800 and an 8% coupon rate, its current price is $740, and its expected to increase to $770 next year.

What is the current yield, the rate of capital gain, and expected return?

Show graphically the effects of an increase in expected inflation on nominal interest rates.