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Mathematics 49 Online
OpenStudy (anonymous):

f f(x) varies directly with x and f(x) = 3 when x = 12, then what is the value of f(x) when x = 40? a 480 b 160 c 10 d 4

OpenStudy (adamaero):

Can you eliminate any choices?

OpenStudy (anonymous):

not really idk how to solve this

OpenStudy (cggurumanjunath):

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