Answer:

Step-by-step explanation:
Given the equation of the circle: 
We wish to express it in a Standard form:
We begin by re-arranging:

Next, divide the coefficient of x by 2, square it and add it to both sides.
Do the same for y.

Next, we factorize

This is the standard form.
The statement that is true is C
First you turn 16 to 0.16 then multiply 0.16 x 75 and you should get 12
I hope this helps you and your welcome : )
2. 4 is the solution to line a but NOT for line b