2. Sude'nin tokalarının sayısı, Naz'ın tokalarının sayısının 3 ka- tından 12 eksiktir. Sude Naz'a, kendi tokalarının dörtte birini hediye ettiğın- de her ikisinde de aynı adette toka olduğuna göre, bu iki kişinin toka sayılarının toplamı kaçtır? \( \begin{array}{llll}\text { A) } 36 & \text { B) } 32 & \text { C) } 30 & \text { D) } 24\end{array} \) \( \begin{array}{llll}\text { A } 30\end{array} \)

15. Solve: \( |5 x+1|-9=-4 \)

16. Determine whether \( f(x)=8 x-1 \) is one-to-one. If it is, find a formula for its inverse.

1) A picture should be centered on a wall. The picture is 3 feet wide. The wall is 15 feet wide. How much space should be on the left \( (x) \) and right \( (x) \) of the picture? \( x+3+x=15 \) \( 2 x+3=15 \) What is the value of \( x \) ?

Cuál es la inversa de la matriz: \( \left[\begin{array}{lll}1 & 2 & 1 \\ 0 & 1 & 0 \\ 2 & 0 & 3\end{array}\right] \) a. \( \left[\begin{array}{ccc}-3 & 6 & 1 \\ 0 & 1 & 0 \\ 2 & 4 & -1\end{array}\right] \) b. \( \left[\begin{array}{ccc}-3 & 0 & 2 \\ 6 & 1 & 4 \\ 1 & 0 & 1\end{array}\right] \) c. \( \left[\begin{array}{ccc}3 & 0 & -2 \\ -6 & 1 & 4 \\ 1 & 0 & 1\end{array}\right] \) d. \( \left[\begin{array}{ccc}3 & -6 & 1 \\ 0 & 1 & 0 \\ -2 & 4 & 1\end{array}\right] \)

\( \left.\begin{array}{l}1 \leftarrow \quad \begin{array}{l}\text { Write the augmented matrix for the system of linear equations. } \\ \begin{array}{rl}9 x+y+5 z & =5 \\ 7 x-3 y-z & =9 \\ x-6 y-5 z & =-4\end{array} \\ \text { Enter the augmented matrix. } \\ \square \square \square \square \square \square \square\end{array} \\ \square \square \square \square\end{array}\right] \)