1. Jika \( A=\left[\begin{array}{ccc}2 & 4 & -3 \\ 1 & 5 & 7 \\ 4 & 1 & 2\end{array}\right] \), maka \( a_{13}, a_{21}, a_{32} \) adalah... A. \( -3,4,6 \) B. \( -3,1,1 \) C. \( 5,4,6 \) D. \( 7,2,2 \) E. \( -3,1,2 \)

tinúa con el ejercicio de cramer \[ x=\frac{\left|\begin{array}{ll}5 & 3 \\ 27 & 7\end{array}\right|}{\left|\begin{array}{ll}5 & 3 \\ 4 & 7\end{array}\right|}=\frac{(5)(7)-(27)(3)}{(5)(7)-(4)(3)} \Rightarrow \frac{35-81}{35-12}= \] \( \begin{array}{l}a_{1} x+b_{1} y=c_{1} \\ a_{2} x+b_{2} y=c_{2}\end{array} \) \( \begin{array}{l}x+3 y=5 \\ x+7 y=27\end{array} \)

2 varies directly as the cube of \( x \) and inversely as \( y \). If \( z=237 \) when \( x=10 \) and \( y=2 \), find \( z \) if \( x=8 \) and Round your answer to two decimal places if necessary.

Step 2 of 2: Find the value of \( f(a) \). \( \quad f(x)=4 x^{3}+4 x \)

5. (a4-g9-13) Murod bilan llhomning pullari yig'indisi \( x \) so'm. Murod llhomga y so'm bersa, ularning pullari miqdori tenglashadi. Murodning necha so'm puli bor? \( \begin{array}{ll}\text { A) } \frac{x+3 y}{2} & \text { B) } \frac{x+y}{2} \\ \text { C) } \frac{x-y}{2} & \text { D) } \frac{x+2 y}{2}\end{array} \)

Determine the implied domain of the following function. Express your answer in interval notation. \[ g(x)=-3 x+2 \] \[ \]