QUESTION 9 - Which of the following is equivalent to $10^{z}=0.6$ ? $\log _{0.6}(10)=z$ $\log _{z}(0.6)=10$ $\log (0.6)=z$ $\log _{10}(z)=0.6$

Step 1 ：The question is asking for the equivalent logarithmic form of the exponential equation $10^{z}=0.6$. The general form of a logarithm is $\log_b(a) = c$, which is equivalent to $b^c = a$. Therefore, we need to find the form that matches this pattern.

Step 2 ：The equivalent logarithmic form of the exponential equation $10^{z}=0.6$ is $\log _{10}(0.6)=z$.

Step 3 ：Final Answer: $\boxed{\log _{10}(0.6)=z}$