4.0 Blanche has gathered an assortment of candy bars to give to her friends. She current has 308 candy bars to give to her 14 friends. How many candy bars can she give to each of them? She doesn't want to keep any for herself.

д) \( \frac{1}{6} y=\frac{1}{3} \)

Add \( 3 a+5 \) and \( 2 a^{2}-7 a+5 \)

Evaluate the expression \( 2 x^{2}-y^{1}+3 x^{0} \) for \( x=3 \) and \( y=5 \). 16 50 34 12

La decima parte di \( 10^{20} \) è: \( \begin{array}{ll}\text { A } 10^{10} & \text { C } 100 \\ \text { B } 10^{20} & \text { D } 10^{19}\end{array} \)

Write the system of equations corresponding to the augmented matrix. Then perform the row operations \( R_{2}=-4 r_{1}+r_{2} \) and \( R_{3}=6 r_{1}+r_{3} \) on the given augmented \( \left[\begin{array}{rrr|r}1 & -2 & 4 & -5 \\ 4 & -4 & 4 & -5 \\ -6 & -7 & 2 & 4\end{array}\right] \) matrix. Perform the row operations \( R_{2}=-4 r_{1}+r_{2} \) and \( R_{3}=6 r_{1}+r_{3} \) on the original matrix given in the problem, and enter the resulting matrix below. \( \square \) \( \square \)