At the beginning of the month, you owned $7,000 of News Corp, $4,000 of First Data, and $9,000 of Whirlpool. The monthly returns for News Corp, First Data, and Whirlpool were 8.40 percent, -2.63 percent, and 10.53 percent. What's your portfolio return? (Do not round intermediate calculations and round your final answer to 2 decimal places.)