Parsley Inc was an all-equity-financed firm generating $3M EBIT every year. It decided to issue $8.61M worth of bonds and use proceeds to buy back some shares. Before issuing debt the required return on its assets was 9%, the marginal tax rate is 21% and it placed bonds with 4.5% coupon rate. Assume that the risk-free rate is 1% and MRP is 6%. What is its WACC after issuing debt? [give your answer in %, with two decimal points precision]