Answer
See graph and explanations.
Work Step by Step
a. Let $y=10$, we have $log(\frac{x}{10})=\frac{log(x)}{log10}=log(x)$
b. Graph the left side and right side functions as shown in the figure. We can see that the two curves are different, indicating the that $log(\frac{x}{10})\ne log(x)$ . Thus the original statement is not true.
