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Mathematics 19 Online
OpenStudy (anonymous):

if y varies directly as x and y=49 when x=7, what is the value of y when x=3 a. 7 b. 9 c. 49 d. 21

OpenStudy (baseballguy101):

so start by doing 49/7. which equals 7 then times that by 3 equaling 21 so D

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