\( \frac { 1 } { r } \times \frac { 1 - ( \frac { 1 } { r } ) ^ { n } } { 1 - \frac { 1 } { r } } \geq \frac { 9 r } { 100 } \Rightarrow 1 - \frac { 1 } { r ^ { n } } \geq \frac { 9 r } { 100 } \)

Use the power of a power property to simplify: \( (2y^{5})^{2} \)

(4) \( (x+3)^{3}=343 \)

47. ( \( 99-4-32) y=\pi s i n \pi x+2 x-4 \) funksiyaning \( x= \) 1 bo'ganda qiymati 3 ga teng bo'ladigan bosh lang ich funksiyasi \( x \) ming qanday qiymatida nolg aylanadi? \( \begin{array}{lllll}\text { A) } 0 & \text { B) } 1 & \text { C) } 0,5 & \text { D) } 2 & \text { E) }-2\end{array} \)

742. Нишон дихед, ки \( 2 a-b-(2 b-a)-3(a-b) \)

\( \frac{\mathbf{2}^{2004}-\mathbf{2}^{2002}}{2^{2001}}=? \) \( \begin{array}{lllll}\text { A) } 2 & \text { B) } 4 & \text { C) } 6 & \text { D) } 8 & \text { E) }\end{array} \)