A stock has an expected return of $10\mathrm{.}45$ percent, its beta is $\mathrm{.}85,$

and the expected return on the market is $11\mathrm{.}8$ percent. What

must the risk$-$free rate be$?$

Input area:

$($Use cells A$6$ to B$8$ from the given information to complete this question.$)$

Output area:

Risk$-$free please help with excel formula