29-27

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Source: — Data Sufficiency |

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by agps » Wed Aug 29, 2007 8:38 am
Answer D (either)

1) f(c)=13 -> 3c+1=13 -> c=4 ->g(c)=g(4) = 4-1/3 = 1 sufficent

2)f(1)=c -> 3*1+1=c -> c=4 (... same as above) sufficent