Answer:
A) 
Step-by-step explanation:
The equation of a circle is
where
is the center and
is the radius. If
and
, then:

Therefore, the equation of the circle is 
Answer:
n = 145
Step-by-step explanation:
-58 ÷ -0.4 = 145
n = 145
Answer:
0.428571429
Step-by-step explanation: