It 1 of 2 Write a formula for the general term or nth term for the sequence. Then find the indicated term. \( -12,36,-108,324,-972, \ldots ; a_{9} \)

1) \( f(x)=\log _{2} \quad x+2 \) 2) \( f(x)=\log _{2} \quad x-1 \) 3) \( f(x)=\log _{2} \quad x+3 \) 4) \( f(x)=\log _{2}(x+2) \) 5) \( f(x)=\log _{2}(x-2) \) 6) \( f(x)=\log _{2}(x-5) \)

8. a) \( \operatorname{Add} \frac{7}{9+\frac{1}{6}}= \)

W1. Wite a number in the box to make itis correct. \[ \frac{3}{5}<\frac{\square}{100}<0.7 \]

Express the repeating decimal number as a quotient of two integers. \( 4 . \overline{45} \) \( 4 . \overline{45}=\square \) (Simplify your answer. Type an improper fraction.)

\( \begin{array}{ll}\text { a) } 3 \sqrt{12}-5 \sqrt{27}+\sqrt{243}-\frac{1}{5} \sqrt{75} & \text { b) } \sqrt{14+\sqrt{7-\sqrt[4]{81}}}\end{array} \)