In \( 2012,34.1 \% \) of all glass containers were recycled. A beverage company used 300,000 lb of glass containers per year. After recycling, the amount of glass, in pounds, still in use after \( t \) years is given by \( N(t)=300,000(0,446)^{t} \). a) Find \( N(6) \), and explain its meaning. b) Find \( N^{\prime}(6) \), and explain its meaning. c) When will \( 2 \% \) of the original amount of glass still be in use?

\( 21 \left\{ \begin{array} { l } { x } \\ { y } \end{array} \right. \)

Solve the quadratic equation by using the quadratic formula. \[ 2 x^{2}+3 x+4=0 \]

Your electric drill rotates initially at \( 5.71 \mathrm{rad} / \mathrm{s} \). You slide the speed control and cause the drill to undergo constant angula acceleration of \( 0.347 \mathrm{rad} / \mathrm{s}^{2} \) for 4.35 s . What is the drill's angular displacement \( \Delta \theta \) during that time interval?

7/30 A clock gains 10 minutes every hour. he angle traversed by the second hand in one inute will be?

Gauss jordan \( \left(\begin{array}{lll|l}3 & 5 & 2 & 845 \\ 4 & 2 & 1 & 580 \\ 1 & 3 & 3 & 605\end{array}\right) \)