Your current portfolio was allocated as follows: $45\%$ to SPY$,30\%$ to IWM, and $25\%$ to Cash.

If their respective monthly returns for one month were $12\mathrm{.}84\%,9\mathrm{.}35\%,$ and $0\mathrm{.}25\%,$ what was

your portfolio return for that month?

$9\mathrm{.}21\%$

$8\mathrm{.}65\%$

$6\mathrm{.}12\%$