a$.$ Calculate the U$.$S$.$ dollar$-$Swiss franc exchange rate, $E_{\text{S}\text{i}\text{f}\text{r}\text{a}\text{n}\text{c}},$ and the U$.$S$.$ dollar$-$British pound exchange rate, $E_{\frac{\text{\$}}{}},$ as of June $30,2010($hint: $E_{\frac{\text{\$}}{f}\text{r}\text{a}\text{n}\text{c}}=\frac{1}{E_{\text{f}\text{r}\text{a}\text{n}\text{c}\text{\$}}}..$

b$.$ What happened to the value of the U$.$S$.$ dollar relative to the Swiss franc and the British pound between $2009$ and $2010?$ Calculate the percentage change in the value of the U$.$S$.$ dollar relative to each currency using the U$.$S$.$ dollar$-$foreign currency exchange rates you calculated in $($a$).$

c$.$ Using the information in the table, calculate the Japanese yen$-$Norwegian krone exchange rate as of June $30,2010($hint: use cross rate as shown below$)$

$)=(\frac{E_{\frac{}{}}}{\text{u}\text{b}\text{r}\text{a}\text{c}\text{e}(E_{}\text{u}\text{b}\text{r}\text{a}\text{c}\text{e}{)}_{\frac{\text{\$}}{}}}$ubrace