The standard form of a circle is:

Your center is
and your radius is 
Plug them into the equation and you get


The correct answer is D.
Here you are. you can see my explication.
have fun
Answer:
Its Option C
Step-by-step explanation:
Basically Linear is derived from the word line
Also this an equation for the line
The y-intercept is 8 and the gradient is -7
This is why the function is linear
Answer:
102°
Step-by-step explanation:
This is an isosceles triangle
x = 180 - 39 - 39
x = 102°