If y varies directly as x, and y=6 when x=2, what is the value of y when x=7

21

Step-by-step explanation:

y∞x

y=kx(where k is the constant)

6=2k

6/2=k

3=k

there the relationship between y,k and x is y=3x

y=3(7)

y=3×7

y=21

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company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b