The equation x^2 + (y + 3)^2 = 36 models the boundary on a local map for which Darren can hear his friend Tom on his two-way radio when Darren is at home. How far (in miles) can Tom walk from Darren's home and still be heard?

3 miles

6 miles

2 miles

12 miles

2. A plane intersects only one nappe of a double-napped cone so that it is parallel to the cone's generating line. Which conic section is formed?

point

circle

ellipse

parabola


3.The center of a circle is at (-5, 12) and it has a radius of 16. What is the equation of the circle?
(Points : 4)
(x + 5)^2 + (y - 12)^2 = 256

(x + 5)^2 + (y-12)^2 = 4

(x - 5)^2 + (y + 12)^2 = 256

(x - 5)^2 + (y + 12)^2 = 4

1. 6 miles

2. parabola

3. (x + 5)^2 + (y - 12)^2 = 256
(the first choice}