Exercise $12\mathrm{.}1$ #$11$ algo $($Calculator Version$)$itsferencesKaren obtained a $$40,000$ loan at $3\mathrm{.}9\%$ compounded semiannually.a$-1.$ What monthly payment will repay the loan in $71/2$ years? $($Do not round intermediate calculations and round your final answer to $2$ decimal places.$)$Monthly paymenta$-2.$ How much interest will Karen pay over the life of the loan? $($Round intermediate calculations to $2$ decimal places and round your final answer to the nearest dollar.$)$Total interest$