At the beginning of the month, you owned $8,000 of News Corp, $8,300 of First Data, and $8,700 of Whirlpool. The monthly returns for News Corp, First Data, and Whirlpool were 9.40 percent, 2.73 percent, and 11.53 percent. Whats your portfolio return? (Do not round intermediate calculations. Round your answer to 2 decimal places.)