You have $$12,000$ in cashYou can deposit it today in a mutual fund earning $7\mathrm{.}90$ percent semiannually, or you can wait, enjoy some o itand invest $$11,000$ in your brother's business in two years $.$ Your brother is promising you a return of at least $10\mathrm{.}20$ percent on you investmentWhichever alternative you choose, you will need to cash in at the end of $10$ yearsAssume your brother is trustworthy and both investments carry the same riskAlso assume you will not invest the $$11\mathrm{.}000$ in the first two years. $($Round intermediate calculations to decimal places, eg$.2\mathrm{.}512512$ and final answers to $2$ decimal places $,$ e$.$g$.2,515\mathrm{.}25)$