\( 1 \leftarrow \quad \begin{array}{l}\text { Use properties of loganithms to condense the logarithmic expression below. Write the expression as a single logarithm } \\ \text { whose coefficient is } 1 \text {. Where possible, evaluate logarithmic expressions. } \\ 6 \ln x+3 \ln y-4 \ln z\end{array} \) \( 6 \ln x+3 \ln y-4 \ln z=\square \)

6) Dada a progressão geométrica \( 1,3,9,27, \ldots . \). se a sua soma é 3280 , então ela apresenta: \( \begin{array}{lll}\text { a) } 9 \text { termos } & \text { b) } 8 \text { termos } & \text { c) } 7 \text { termos } \\ \text { d) } 6 \text { termos } & \text { e) } 5 \text { termos } & \end{array} \) Alternativa B

5. ¿Cuál es el valor de \( \log _{4} \frac{1}{16} \) ?

Uma functio lograritmica possui lei de formaçäo igual a \( f(x)=\log _{2} x \). Qual deve sora valor de x para que \( f(x)=10 \) ? \( \begin{array}{llll}\text { ad } & \text { B) } 128 & \text { C) } 256 & \text { D) } 512\end{array} \)

Find the outer measure of \( x \) for \( \{-5 \leq x \leq 3\} \cup\{-2 \leq x<7\} \)

Simplify \( \log_3 81 \) by expressing it using a change of base to base 10.