Calvin is planning to visit his hometown during Thanksgiving Holidays. It will take \(9\) hours if he drives at \(85 \text{ km/h}.\) How long will it take if he drives at \(102 \text{ km/h} ?\)

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If \(z\) varies directly as \(x\) and inversely as \(y,\) how many times larger does \(z\) get if \(x\) is increased by \(2\) times and \(y\) is decreased by \(7\) times?

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