Explanation:
step 1. distance formula (d) = ((y2-y1)^2 + (x2-x1))^(1/2).
step 2. d = ((-3-(-9))^2 + (0-(-5))^2)^(1/2)
step 3. d = (36 + 25)^(1/2)
step 4. d = (61)^(1/2) (this is the square root of 61).
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