You're working at Exxon. The risk$-$free rate in the economy right now is $1\mathrm{.}79\%.$ You believe the market will average $5\mathrm{.}67\%$ per year over the next $20$ years.$$ Exxon's stock has a beta of $0\mathrm{.}9.$ What is the required return for Exxon?$($Please enter the percent return without the $\%$ sign at the end since Canvas doesn't like that symbol in numerical answers $-$ for instance $20\mathrm{.}45$ for $20\mathrm{.}45\%)$