Why didn't " ListLogPlot+Text " work?

Questions
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1

Dear,

I am testing ListLogPlot. The following set of commands tries to create a LogPlot and to put a label at the side of the point {3.5,80.21}. Unfortunatelly the set didn’t work. Could you help me?

a = ListLogPlot[{{2, 4}, {3, 27}, {4, 256}}];
b = ListLogPlot[{{3.5, 80.21}}, PlotStyle -> {Red}];
c = Graphics[Text["(3.5,80.21)", {3.6, 80.23}]];
Show[a, b, c]

Thanks,
Antonio Squadri

2

Remember that you are plotting the log of your data. Try something like

c = Graphics[Text["(3.5,80.21)", {3.6, Log[80.23]}]];
3

Thank you very much

4

Same issue as Why ListLogPlot with Graphics and Show does not work?