Problem $6-13$ Calculating APR $[$LO$4]$

Find the APR, or stated rate, in each of the following cases: $($Do not round intermediate calculations and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$ Stated Rate $($APR$)$ Number of Times Compounded Effective Rate $($EAR$)$

$\%$ Semiannually $12\mathrm{.}2\%$

Monthly $13\mathrm{.}1$

Weekly $10\mathrm{.}8$

Infinite $14\mathrm{.}5$