You are planning to save for retirement over the next $35$ years. To do this, you will invest $$710$ per month in a stock account and $$310$ per month in a bond account. The return of the stock account is expected to be $9\mathrm{.}1$ percent, and the bond account will return $5\mathrm{.}1$ percent. When you retire, you will combine your money into an account with a return of $6\mathrm{.}1$ percent. How much can you withdraw each month from your account assuming a $30-$year withdrawal period? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

You receive a credit card application from Shady Banks Savings and Loan offering an introductory rate of $\mathrm{.}4$ percent per year, compounded monthly for the first six months, increasing thereafter to $17\mathrm{.}7$ percent compounded monthly. Assume you transfer the $$6,700$ balance from your existing credit card and make no subsequent payments. How much interest will you owe at the end of the first year? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$