HELP WITH THESE THREE QUESITONS PLEASE!!!!

$1.$You own a portfolio of two stocks, A and B$.$ Stock A is valued at $$9,528$ and has an expected return of $12\mathrm{.}23$ percent. Stock B has an expected return of $6\mathrm{.}84$ percent. What is the expected return $($in percent$)$ on the portfolio if the portfolio value is $$14,376?$ Answer to two decimals

$2.$ A $$37,307$ portfolio is invested in a risk$-$free security and two stocks. The beta of Stock A is $1\mathrm{.}52$ while the beta of Stock B is $0\mathrm{.}92.$ One$-$half of the portfolio is invested in the risk$-$free security. How much $($in $$)$ is invested in Stock A if the beta of the portfolio is $0\mathrm{.}65?$ Answer to two decimals

$3.$Stock A has an expected return of $13\mathrm{.}88$ percent. Stock B has an expected return of $9\mathrm{.}74$ percent. Assuming the Capital Asset Pricing Model holds, and Stock A$\text{'}$s beta is greater than Stock B$\text{'}$s beta by $0\mathrm{.}54,$ what is the expected market risk premium $($in percent$)?$ Answer to two decimals