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12. y varies directly as x. y = 12 when x = 5. Find y when...

12. y varies directly as x. y = 12 when x = 5. Find y when x =2

Y = _?__ (Simplify your answer).

13.

y varies directly as x and inversely as the square of z. y =48 when x =64 and z= 4. Find y when x= 2 and z =4.

Y = _?__ (Simplify your answer. Type an integer or a simplified fraction).

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