Serena's Skincare sells Sunscreen in Orlando, Florida. The annual return for B the company is affected by the average temperature of the year. When the weather is cold (25% of the year), normal (40% of the year) and hot (35% of the year, its return is expected to be-10%, 8%, and 15% respectively, what is the expected return? Round to the nearset hundredth percent. Answer in the percent format. Do not include % sign in your answer (ie. If your answer is 4.33%, type 4.33 without a % sign at the end.)