$.$ What was the real rate of return over the past year $($from one year ago to today$)$ for a stock if the inflation rate over the past year was $4\mathrm{.}14\%,$ the risk$-$free return over the past year was $5\mathrm{.}26\%,$ the stock is currently priced at $$128\mathrm{.}70,$ the stock was priced at $$120\mathrm{.}00$ one year ago, and the stock just paid a dividend of $$5\mathrm{.}65?$ Answer in decimal format, rounded to the nearest hundredth of a percent $($for example, $1\mathrm{.}23\%$ would be entered as $0\mathrm{.}0123).$

$2.$ Shares of Rampage are currently priced at $$49\mathrm{.}00$ per share. There is a $70\%$ probability of a good outcome and a $30\%$ probability of a bad outcome. In the good outcome, Rampage would be priced at $$55\mathrm{.}66$ in $1$ year and would pay a dividend of $$4\mathrm{.}12$ in $1$ year. In the bad outcome, Rampage would be priced at $$39\mathrm{.}78$ in $1$ year and would pay a dividend of $$0\mathrm{.}89$ in $1$ year. What is the expected standard deviation of Rampage stock$$s returns? Answer in decimal format, rounded to the nearest hundredth of a percent $($for example, $1\mathrm{.}23\%$ would be entered as $0\mathrm{.}0123).$

$3.$ Tony$$s portfolio is worth $$189,000$ and has three stocks.$$ It has $$87,000$ of stock A$,$ which has an expected return of $11\mathrm{.}11\%$; it has $8,000$ shares of stock B$,$ which has a share price of $$8\mathrm{.}75$ and an expected return of $8\mathrm{.}88\%$; and it has some stock C$,$ which has an expected return of $22\mathrm{.}22\%.$ What is the expected return of Tony$$s portfolio? Answer in decimal format, rounded to the nearest hundredth of a percent $($for example, $1\mathrm{.}23\%$ would be entered as $0\mathrm{.}0123).$