train leaves station A towards station B at the peed of \( 50 \mathrm{~km} / \mathrm{hr} \). After half an hour, another trair eaves station B towards station A at \( 150 \mathrm{~km} / \mathrm{hr} \). he distance between the stations is 725 km . The listance of the point from station A where the two rains are to meet is:

Solve \( 4 n+6=-42 \) Solve \( -10 r-5=4 n \)

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?

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

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