Try sleeping in dark quiet room that you are comfortable in. You can also play relaxing type of music such as calm music or nature sounds to help improve sleep. Just relax, and free your mind.
Hope this helps!
<em>~ ShadowXReaper069</em>
<u>This question is off-topic, but I'm answering it assuming you meant to categorize as maths.</u>
Answer:
or 
Explanation:
<u>Factoring</u>
It consists of converting an algebraic expression, usually as a polynomial into two or more factored terms.
We must find the greatest possible common factor and use it to modify the original expression.
The given expression is

It's evident that both terms have a numeric common factor of -9. Let's factor by -9. We must divide each term by -9 to get:

We can even factor further by writing

The answer is C because there are germs on your hands