Posted by **Stacie** on Saturday, June 22, 2013 at 10:37pm.

y varies jointly as x and z, and y=98/3 when x=2 ans z=7. Find y when x=7 and z=3.

Options:

A: y=7/3xz; 49

B: y=6/7xz; 18

C: y=14/3xz; 98

D: y=3/7xz; 9

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