Question 1076393
a.)Suppose z varies jointly as y and  x. If z =105 when x=5 and y=7, what is z when x=12 and y=1?
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{{{z=k*xy}}}


{{{k=z/(xy)}}}

{{{k=105/(5*7)}}}

{{{k=3}}}

MODEL:  {{{highlight_green(z=3xy)}}}


Substitute the next given values to answer the question.