Use the currency exchange rates in the table for the following question. As you leave Vienna, you convert 325 euros to U.S. dollars. How many dollars do you receive?

Find the critical values \( \chi_{1-\alpha / 2}^{2} \) and \( \chi_{\alpha / 2}^{2} \) for a \( 98 \% \) confidence level and a sample size of \( n=10 \). \( \chi_{1-\alpha / 2}^{2}=2.088 \) (Round to three decimal places as needed.) \( \chi_{\alpha / 2}^{2}=\square \) (Round to three decimal places as needed.)

Rewrite the expression by factoring out \( (w+2) \) \( 7 w^{2}(w+2)-(w+2) \)

2. Considere os números 1,3 e 5 . a) Quantos números de três algarismos distintos é possível montar?

67. In un rettangolo la base è \( 5 / 2 \) dell'altezza e la differenza tra le due dimensioni è \( 27 \mathrm{~cm}^{2} \). Calcola l'area del rettangolo. [ \( \left.810 \mathrm{~cm}^{2}\right] \)

\( \frac{x}{2}+\frac{y}{4}=1 \) and \( 2 x^{2}+2 y^{2}-200=0 \)