To raise funds for uniforms and travel expenses, the soccer team is eolding a car wash in a part of town with a lot of car and truck traffic. The eam spent \( \$ 90 \) on supplies like sponges and soap. They plan to harge \( \$ 10 \) per car and \( \$ 20 \) per truck. Their goal is to raise \( \$ 460 \). 47 13 25

7. Factorice A. \( 9 x^{3}-6 x^{2}+12 x^{5}-18 x^{7} \) B. \( 36 x^{2}-a^{6} b^{4} \) C. \( x^{2}+5 x+6 \) D. \( 3 x^{2}+10 x+8 \) E. \( x^{3}+2 x^{2}+x+2 \) F. \( x^{3}-27 \)

Solve the inequality. Write the solution set in interval notation. \( 4(x+2)+4 \geq 5+4 x \)

Multiply. (Simplify your answer completely.) \[ \left(w^{2}+w-9\right)\left(w^{2}-w+5\right) \]

6 Sobre la arena de una plaza circular, que tiene un ra- dio de 30 metros, se va a instalar, para un festival de danza, una plataforma cuadrada de 10 m de lado. El resto del círculo albergará sillas para los espectadores. ¿Qué superficie queda para colocar las sillas?

a. Find \( A \cap B \) b. Represent \( A \) and \( B \) on a Venn diagram.