7, A circle is centered at (7, 8) and has a radius of 11. Which of the following is the equation for this circle?

a. (x 7)2+ (y 8)2= 121

b. (x 7)2+ (y 8)2= 11

c. (x + 7)2+ (y + 8)2= 121

d. (x + 7)2+ (y + 8)2= 11

8, Which of the following steps is needed to circumscribe a circle about a triangle?

a. Construct one perpendicular bisector of the triangle

b. Construct one angle bisector of the triangle

c. Construct two perpendicular bisectors of the triangle

d. Construct two angle bisectors of the triangle