Answer: 
Step-by-step explanation:
The standard form of a circle is written as such:

Where (h, k) is the center of the circle, and r is the radius.
We know that the center is (-7, 0), so we can plug that into the equation like this: 
The radius is 3 * the square root of 3. To square this, we can multiply 3 squared and the square root of 3 squared:

So, your standard form equation is the following:

It equals to 90%, or 9/10
Answer:
The fraction.
Step-by-step explanation:
3
is a mixed number, so the 1 over 2 is the fraction of the whole number.
Your monthly payment would be $9.99 that is your answer to your question.
I hope this is what you are looking for have i nice week