MCQM4903 · [1] The functions f and g are given by f(x)=3x-5 and g(x)=dfracx+53 . The identity function is I(x)=x . Which expression equals I(7) ? Adfrac3(7)-5+53B3left(dfrac7+53right)+5Cdfrac3(7)+53-5D3(7)-5 · dfrac7+53 Next question →