In early $2018,$ Qualcomm Inc. had $$$$20\mathrm{.}83$ billion in$$ debt, total equity capitalization of $$$$92$billion$,$ and an equity beta of $1\mathrm{.}33($as reported on$$ Yahoo! Finance$).$ Included in Qualcomm's assets was $$$$41$ billion in cash and$$ risk$-$free securities$.$ Assume that Qualcomm's debt beta is close to$$ zero, the$$ risk$-$free rate of interest is $3\mathrm{.}1\%$ and the market risk premium is $4\mathrm{.}1\%.$ What is Qualcomm's $$WACC$?$ Assume Corporate tax rate is zero