308 Nel triangolo \( A B C \), isoscele contenente \( A \), costruisci il triang [Si giunge all equ: a. Del trapezio isoscele \( A B C D \) b. Determina l'angolo \( B \widehat{A} D \) i impos

6) \( 30 \% \) of \( 600=\ldots(1.8,18,180,1800) \)

If you have a sample set of data that looks to be a realization of an inte grated process of order 2, what would you do to the data in order to mod el it? (2 Marks)

st Prep A new mobile device has a value of \( \$ 256.25 \). Its value changes by \( -22 \frac{1}{2} \% \) each year. What is the value of the phone after two years? \( \begin{array}{ll}\text { (A) } \$ 140.93 & \text { (C) } \$ 153.91 \\ \text { (B) } \$ 198.59 & \text { (D) } \$ 57.66\end{array} \)

Mrs Brown gave \( \frac{4}{7} \) of her money to her son. He spent \( \frac{2}{5} \) of the money on a pair of shoes and the rest on two books that cost \( \$ 18 \) each. How much did Mrs Brown have at first?

Solve the equation. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) \[ 4 x^{-4}-5 x^{-2}+1=0 \] \( x=\square \)