Find the variation equation for the variation statement.z varies jointly as y and the cube of x; z = 120 when x = 2 and y = -3
A. y = -5xy3
B. y = -5x3y
C. y = 5xy3
D. y = 5x3y
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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A. yes B. no
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