Answer:
Step-by-step explanation:
d= 2r
therefore the radius is 1
It's been such a long time, but I think (1) should be the addition property since your adding 5 to both sides.
And (2) should be the multiplication property due to multiplying both sides by 2.
Distance between two points, d, is given by

where: (x1, y1) = (8, 2) and (x2, y2) = (3, 8)
(x + 9) (x + 34)
9 * 34 = 306
9 + 34 = 43