Question 4 2 pts Toshi buys a perpetuity that sells for $80 and pays a coupon of $6 each year. Calculate its yield to maturity, carefully following all numeric instructions and using the techniques employed in the lecture. Enter your answer "as a percent, but without the percentage sign." In other words, if you want to say 99 percent (0.99 in decimal format), enter only 99 in the blank. See the math review for more info