The distance formula is : distance = SQRT((x2-X1)^2 + (y2-y1)^2)
Use (3,5) for X1 and Y1
Use (-6,-6) for X2 and Y2
You now have:
distance = SQRT ( (-6 - 3)^2 + (-6 - 5)^2)
distance = SQRT (-9^2 + -11^2)
distance = SQRT ( 81 + 121)
distance = SQRT (202)
distance = 14.21 units
The answer is A.