7. Given \( f(x)=2-\frac{3}{x} \), find \( f^{-1}(x) \) and state its domain and range.

Diketahui \( g(x)=2 x-4 \operatorname{dan}(f \circ g)(x)=\frac{7 x+3}{5 x-9} \). Nilai dari \( f(2)=\cdots \) \( \begin{array}{lll}\text { A. } 0 & \text { C. } 2 & \text { E. } 5 \\ \text { B. } 1 & \text { D. } 4 & \end{array} \)

\( 0.2 x+100=0 \) is

\( 5 \frac { - \frac { 7 } { 5 } + \frac { 3 } { 4 } + \frac { 7 } { 60 } - \frac { 2 } { 15 } } { ( - 1 ) : ( \frac { 17 } { 12 } - \frac { 14 } { 5 } + \frac { 1 } { 3 } ) } \quad \frac { - \frac { 11 } { 6 } + \frac { 8 } { 3 } - \frac { 3 } { 4 } } { - \frac { 1 } { 3 } + \frac { 7 } { 4 } } \)

(181) \( \frac{38}{25}=\left[\left(-\frac{7}{5}+\frac{3}{20}-\frac{1}{10}\right):\left(\frac{11}{10}+\frac{17}{3}-\frac{34}{15}\right)-\frac{1}{3}\right] \cdot\left(-\frac{7}{12}\right) \)

From \( 8 t^{3}+6 t^{2}-4 t+2 \) subtract \( t^{3}+3 t \)