**1. Express in log notation and write down the base and the index.**

** c)**

**1. Express in log notation and write down the base and the index.**

** c)**

**Answer:**

** c)**

**1. Express in log notation and write down the base and the index.**

**c)**

**Solution:**

From the definition of the logarithms. If
then
,
where a is the base and x is the index.

**c) **

**Rule:** If

(Note: Both terms have the same base,
)

then