Algebra

Suppose that y varies directly with x and inversely with zy=25 when x=35, and z=7. Write the equation that models the relationship. Then find y when x=12 and z=4
Help me!?

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  1. Is there supposed to be a period after the first "z" ? (Before y = 25 ?)

    If not, your question does not make sense to me.

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