4. An investor purchased a bond that has a coupon rate of 8% paid quarterly, face value $1000, and maturing in 30 years. The purchasing price was $850 and had 20 years to maturity. 1) If your MARR was 1 096, was the purchase a good decision or bad decision? (10 points) 2) The bond was kept for only 7 years and sold for $950 immediately after the 28th interest payment was received. Calculate the nominal and effective rates of retun per year on this investment. (15 points)