Assume you have a portfolio of $$100,000$ with the following investments and their betas:

$$100,000$ Portfolio

$\backslash$table$[[$Stocks$,$Beta,Inv. Amt,$],[$AAPL$,1\mathrm{.}25,$$$,20,000],[$NKE$,1\mathrm{.}05,$$$,13,000],[$UAL$,1\mathrm{.}48,$$$,17,000],[$AMZN$,1\mathrm{.}14,$$$,25,000],[$WMT$,0\mathrm{.}52,$$$,25,000]]$

A$.$ Calculate your portfolio beta.

B$.$ If the expected return on the market is $12$ percent and the risk$-$free rate is $4\mathrm{.}50$ percent, calculate the required return of your portfolio.