Problem $9-25$ Portfolio Return $($LG$9-7)$

At the beginning of the month, you owned $$5,500$ of General Dynamics, $$7,500$ of Starbucks, and $$8,000$ of Nike. The monthly returns for General Dynamics, Starbucks, and Nike were $7\mathrm{.}44$ percent, $-1\mathrm{.}36$ percent, and $-0\mathrm{.}54$ percent. What is your portfolio return? $($Do not round intermediate calculations and round your final answer to $2$ decimal places.$)$