Serena’s Skincare sells Sunscreen in Orlando, Florida. The annual return for 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 near set hundredth percent. Answer in the percent format. Do not include % sign in your answer (i.e. If your answer is 4.33%, type 4.33 without a % sign at the end.)