It can be viewed different to what is more accurate depending on the relation of this question to another.
Slope = (Y2 - Y1) / (X2 - X1)
Slope = (5 - 3) / (5 - 8) = 2/-3 = -2/3
Answer: (B) -2/3
Answer:
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V=4/3πr^3, so substitute what you know. Input the volume so you only have to solve one variable, the r, radius.