The equation of a circle whose center is at (4,0) and radius is length 2 (3) is
(x - 4)2 + y2 = 213
(X - 4)2 + y2 = 12
(x + 4)2 + y2 = 12

I think the answer is (x-4)2 + y2 = 12 :) sorry if i am wrong***

Step-by-step explanation:

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.

the correct answer is b.

this is because an open circle means < or > & since the line goes left it is < -3.

the next one has a filled circle so it can only be ≥ or ≤ and since the line goes right from 1 it is ≥ 1

hope that