7. (1 point) Last year, Sarah invested $32,000 in Dunkirk Energy stock, $15,000 in long-term corporate bonds, and $3,000 in U.S. Treasury bills. Over the course of the year, she earned returns of 18.3 percent, 5.6 percent, and 0.4 percent, respectively. What was the risk premium on Dunkirk Energy's stock for the year