Answer:
a
Step-by-step explanation:
If you multiply a by 2, then divide it by 2, then it would equal a.
Hope that this helps!
Answer:

Step-by-step explanation:
Given expression:

To write the given expression in single logarithm.
Solution:
We will apply the logarithm properties to write the expression in single logarithm.
We have:

Using power rule : [
]
⇒ 
Using product rule: [
]
⇒ 
Using quotient rule. [
]
⇒ 
Thus, we successfully converted the expression to a single logarithm expression.
Answer: The first one; Plus 5
Step-by-step explanation: The rest of the answers are all negative 5.