**What is the Domain of the following logarithmic functions?**

1) f(x) = log(3x – 21)

2) f(x) = log(2x + 16)

3) f(x) = log2 (x – 2)

**Perform the operations:**

4) log2 4 + log4 2 =

5) log 1000 + ln e5 =

**Solve the equation:**

6) x2 = log 100 + 90

**7)**Make a paragraph about an application of the Logarithmic Function to the real life and its importance**.**

On all the exercises show your work step-by-step.