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given the parent function f(x) = 3x, which graph shows f(x) + 2? (need verification/explanation)

None of the graphs are for any translation of y = 3x. All are for a translation of
  y = 3^x . . . . . where x is an exponent, not a multiplier
Please use correct mathematical notation. This may require you to edit your pasted question before you post it.

The transformation from f(x) to f(x) +2 causes the graph to be shifted upward by 2 units. The last selection is the correct one.