Plotting hypergeometric functions with constants

Questions
1

I am brand new to Wolfram, so I am still learning. However, I am trying to plot a couple of hypergeometric functions, one being a Kummer confluent and the other being a confluent of the 2nd kind. I seem to be getting caught up on getting the proper range of the variable(s) that I have; I am counting a and b as constants in this scenario, as they are yet to be determined. I have tried a few different values for the boundaries but so far have not had any luck in plotting. What would be the correct way to go about this, if at all possible?

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2

Try scraping this into a freshly started MMA empty notebook

c2=3;b=4;a=5;c1=6;
ComplexPlot3D[
  c2 E^(-Sqrt[b] x)*Hypergeometric1F1[a/(2 Sqrt[b])+1,2,2 Sqrt[b] x]+
  c1 E^(-Sqrt[b] x)*HypergeometricU[a/(2 Sqrt[b])+1,2,2 Sqrt[b] x],
  {x,-10-2 I,10},PlotLegends->Automatic]

and see if you can get that to plot for you.

If it does then you can start making tiny changes, one at a time, and testing after each one to see if you can get it closer to what you actually want and still have it plot for you.