If y varies jointly as x and z, and y = 33 when x = 9 and z = 12, find y and x = 16 and = 22.

Answer 1

y = kxz

33 =k *9* 12
33 = 108k
k = 33/108

y = (33/108)(16)(22)

y = 242/3

Answer 2

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