The impact of promotion on the demand of finished good

Machine Learning and Modeling
1

Hi!
I'm trying to analyze the impact that promotions have had on demand.
I set the import file like:
Date Quantity Currency promotion1 promotion2 promotion3
01/01/2018 2 EUR 1 0 0
02/01/2018 5 USD 0 1 0
03/01/2018 1 EUR 1 0 0

I have 30 dummy variables and my regression model is like:
formula = Quantity ~ promotion1+promotion2+promotion3

Is that correct?
How can I build the regression model so that it also takes into account the currency?

2

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