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Edit:
Sorry for the post that has insufficient data, i checked again the problem and here it is:
y varies directly as the cube of x and square of z. If y = 5 when x = 2, & z = 3, what is y if x = 4 & z = 9?
thank you
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O, this one is much better!
Answer. Then y = * * = 5*8*9 = 360.