7. Kuri spent a total of \( \$ 68 \) on trading cards. His collection contains two types of cards. A pack of trading card \( A \) cost \( \$ 4 \), and a pack of trading cardiB cost \( \$ 7 \). How many packs of each type of trading card were purchased if the total number of packs is 11 ?

The Jamestown colony was in the middle of territory ruled by Powhatan independent Dutch colonizers Tecumseh the Iroquois

Verify that the equation is an identity. \[ \frac{\csc x}{\cot x}=\sec x \]

integrar \( \frac{1}{2} \int_{-\frac{\pi}{4}}^{\frac{\pi}{4}}(\cos 2 \theta)^{2} d \theta \)

\begin{tabular}{l} Find the slope and \( y \)-intercept of the line whose equation is given. \\ \( \qquad y=\frac{8}{9} x-3 \) \\ \hline\end{tabular}

Find the maximum absolute extremum as well as all values of \( x \) where it occurs on the specified domain. \( f(x)=x^{2}-4 ;[-1,2] \) A. 0 at \( x=2 \) B. -3 at \( x=-1 \) C. 0 at \( x=-2 \) D. -3 at \( x=1 \)