7. 30 ta oquvchidan \( 3 x+1 \) tasi rus tilini, \( 2 x-1 \) tasi ingliz tilini, \( x-1 \) tasi rus tilini ham ingliz tilini ham biladi. I tasi esa rus tilini ham ingliz tilini ham bilmaydi, Nechta oquvehi rus tilini biladi? \( \begin{array}{llll}\text { A) } 19 & \text { B) } 13 & \text { C) } 17 & \text { D) } 11\end{array} \)

Question simplify: \( \sqrt[3]{256 d^{4}} \)

Solve \( -6+x=-10 \) Solve \( -3 k-7=50 \)

9) \( \frac{x^{2}+7 x+6}{x+1} \div \frac{10 x+60}{x+1} \) \( \begin{array}{ll}\text { A) } x-5 & \text { *B) } \frac{x+1}{10} \\ \text { C) } \frac{10 x}{x+9} & \text { D) } x-1\end{array} \)

Diketahui fungsi \( \mathrm{f}(\mathrm{x})=\mathrm{x}^{2}+\mathrm{x} \) dan \( \mathrm{g}(\mathrm{x})=\frac{2}{\mathrm{x}+3} \) maka (f.g) adalah...

2) Eduardo ran 26 kilometers less than Jennifer last week. Eduardo ran 18 kilometers. How many kilometers did Jennifer run?